diff --git a/Dockerfile b/Dockerfile
index b92ac228a8d50da93f8c0bfe2f6af31fc784f2c7..5cb25bacc8f586c68a1941a73b34c8cfd10f61c7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -156,16 +156,12 @@ RUN pip3 --no-cache-dir install -U wheel py-cpuinfo==5.0.0 && \
 
 RUN pip3 --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
     pip3 --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip3 --no-cache-dir install opencv-python && \
     pip3.6 --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
     pip3.6 --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip3.6 --no-cache-dir install opencv-python && \
     pip3.7 --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
     pip3.7 --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip3.7 --no-cache-dir install opencv-python && \
     pip --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
-    pip --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip --no-cache-dir install opencv-python
+    pip --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' 
 
 #For docstring checker
 RUN pip3 --no-cache-dir install pylint pytest astroid isort
diff --git a/paddle/scripts/paddle_build.sh b/paddle/scripts/paddle_build.sh
index 69303013d2a41a049276c0d1b03b9d902b555d23..f6d3e640895bd2f1547385c31ccfda3db132bdfa 100755
--- a/paddle/scripts/paddle_build.sh
+++ b/paddle/scripts/paddle_build.sh
@@ -1348,7 +1348,7 @@ EOF
     # run paddle version to install python packages first
     RUN apt-get update && ${NCCL_DEPS}
     RUN apt-get install -y wget python3 python3-pip libgtk2.0-dev dmidecode python3-tk && \
-        pip3 install opencv-python py-cpuinfo==5.0.0 && wget ${ref_web}/${ref_paddle35} && ${ref_paddle35_mv1} pip3 install ${ref_paddle35_whl} ${ref_paddle35_mv2}; apt-get install -f -y && \
+        pip3 install py-cpuinfo==5.0.0 && wget ${ref_web}/${ref_paddle35} && ${ref_paddle35_mv1} pip3 install ${ref_paddle35_whl} ${ref_paddle35_mv2}; apt-get install -f -y && \
         apt-get clean -y && \
         rm -f ${ref_paddle35} && \
         ldconfig
@@ -1370,7 +1370,7 @@ EOF
         CFLAGS="-Wformat" ./configure --prefix=/usr/local/ --enable-shared > /dev/null && \
         make -j8 > /dev/null && make altinstall > /dev/null && cd ../ && rm Python-3.6.0.tgz
     RUN apt-get install -y libgtk2.0-dev dmidecode python3-tk && ldconfig && \
-        pip3.6 install opencv-python && wget ${ref_web}/${ref_paddle36} && ${ref_paddle36_mv1} pip3.6 install ${ref_paddle36_whl} ${ref_paddle36_mv2}; apt-get install -f -y && \
+        wget ${ref_web}/${ref_paddle36} && ${ref_paddle36_mv1} pip3.6 install ${ref_paddle36_whl} ${ref_paddle36_mv2}; apt-get install -f -y && \
         apt-get clean -y && \
         rm -f ${ref_paddle36} && \
         ldconfig
@@ -1386,7 +1386,7 @@ EOF
         CFLAGS="-Wformat" ./configure --prefix=/usr/local/ --enable-shared > /dev/null && \
         make -j8 > /dev/null && make altinstall > /dev/null && cd ../ && rm Python-3.7.0.tgz
     RUN apt-get install -y libgtk2.0-dev dmidecode python3-tk && ldconfig && \
-        pip3.7 install opencv-python && wget ${ref_web}/${ref_paddle37} && pip3.7 install ${ref_paddle37_whl}; apt-get install -f -y && \
+        wget ${ref_web}/${ref_paddle37} && pip3.7 install ${ref_paddle37_whl}; apt-get install -f -y && \
         apt-get clean -y && \
         rm -f ${ref_paddle37} && \
         ldconfig
@@ -1402,7 +1402,7 @@ EOF
         CFLAGS="-Wformat" ./configure --prefix=/usr/local/ --enable-shared > /dev/null && \
         make -j8 > /dev/null && make altinstall > /dev/null && cd ../ && rm Python-3.8.0.tgz
     RUN apt-get install -y libgtk2.0-dev dmidecode python3-tk && ldconfig && \
-        pip3.8 install opencv-python && wget ${ref_web}/${ref_paddle38} && pip3.8 install ${ref_paddle38_whl}; apt-get install -f -y && \
+        wget ${ref_web}/${ref_paddle38} && pip3.8 install ${ref_paddle38_whl}; apt-get install -f -y && \
         apt-get clean -y && \
         rm -f ${ref_paddle38} && \
         ldconfig
diff --git a/tools/dockerfile/Dockerfile.centos b/tools/dockerfile/Dockerfile.centos
index a50d08354b8b4572516296546fb2cc87548b5349..f223ed8f8c28fa1b51cd81bb73809d8ee9403a82 100644
--- a/tools/dockerfile/Dockerfile.centos
+++ b/tools/dockerfile/Dockerfile.centos
@@ -63,12 +63,12 @@ RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.15-ucs4/lib:${LD_LIBRARY_PATH} /o
     go get github.com/Masterminds/glide && \
     rm -rf /root/requirements.txt
 
-RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.15-ucs4/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27mu/bin/pip install pre-commit 'ipython==5.3.0' opencv-python==4.2.0.32 && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.15-ucs2/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27m/bin/pip install pre-commit 'ipython==5.3.0' opencv-python==4.2.0.32 && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.5.1/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.5.1/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python==4.2.0.32 && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.6.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.6.0/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python==4.2.0.32 && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.7.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.7.0/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python==4.2.0.32 && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.8.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.8.0/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python==4.2.0.32
+RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.15-ucs4/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27mu/bin/pip install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.15-ucs2/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27m/bin/pip install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.5.1/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.5.1/bin/pip3 install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.6.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.6.0/bin/pip3 install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.7.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.7.0/bin/pip3 install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.8.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.8.0/bin/pip3 install pre-commit 'ipython==5.3.0' 
 
 RUN wget -O /opt/swig-2.0.12.tar.gz https://sourceforge.net/projects/swig/files/swig/swig-2.0.12/swig-2.0.12.tar.gz/download && \
     cd /opt && tar xzf swig-2.0.12.tar.gz && cd /opt/swig-2.0.12 && ./configure && make && make install && cd /opt && rm swig-2.0.12.tar.gz
diff --git a/tools/dockerfile/Dockerfile.ubuntu b/tools/dockerfile/Dockerfile.ubuntu
index 9fe58885fa553671cf5c08bd51295f271f4df668..9b5602d4943ad422fd4f0b8dbc7effb33ea075b7 100644
--- a/tools/dockerfile/Dockerfile.ubuntu
+++ b/tools/dockerfile/Dockerfile.ubuntu
@@ -156,19 +156,14 @@ RUN pip3 --no-cache-dir install -U wheel py-cpuinfo==5.0.0 && \
 
 RUN pip3 --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
     pip3 --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip3 --no-cache-dir install opencv-python==4.2.0.32 && \
     pip3.6 --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
     pip3.6 --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip3.6 --no-cache-dir install opencv-python==4.2.0.32 && \
     pip3.7 --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
     pip3.7 --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip3.7 --no-cache-dir install opencv-python==4.2.0.32 && \
     pip3.8 --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
     pip3.8 --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip3.8 --no-cache-dir install opencv-python==4.2.0.32 && \
     pip --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
-    pip --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip --no-cache-dir install opencv-python==4.2.0.32
+    pip --no-cache-dir install 'ipykernel==4.6.0'
 
 #For docstring checker
 RUN pip3 --no-cache-dir install pylint pytest astroid isort && \
diff --git a/tools/dockerfile/build_scripts/install_nccl2.sh b/tools/dockerfile/build_scripts/install_nccl2.sh
index 6307a52edd18b5f72cec8c00fa0276630126b35f..628c782726bf6fc1e05d8fa762f445145e119f10 100644
--- a/tools/dockerfile/build_scripts/install_nccl2.sh
+++ b/tools/dockerfile/build_scripts/install_nccl2.sh
@@ -2,12 +2,17 @@
 VERSION=$(nvcc --version | grep release | grep -oEi "release ([0-9]+)\.([0-9])"| sed "s/release //")
 if [ "$VERSION" == "10.0" ]; then
   DEB="nccl-repo-ubuntu1604-2.4.7-ga-cuda10.0_1-1_amd64.deb"
+elif [ "$VERSION" == "11.0" ]; then
+  DEB="nccl-repo-ubuntu1604-2.7.8-ga-cuda11.0_1-1_amd64.deb"
+elif [ "$VERSION" == "10.2" ]; then
+  DEB="nccl-repo-ubuntu1604-2.7.8-ga-cuda10.2_1-1_amd64.deb"
 elif [ "$VERSION" == "10.1" ]; then
-  DEB="nccl-repo-ubuntu1604-2.4.7-ga-cuda10.0_1-1_amd64.deb"
+  DEB="nccl-repo-ubuntu1604-2.7.8-ga-cuda10.1_1-1_amd64.deb"
 elif [ "$VERSION" == "9.0" ]; then
   DEB="nccl-repo-ubuntu1604-2.3.7-ga-cuda9.0_1-1_amd64.deb"
 else
-  DEB="nccl-repo-ubuntu1604-2.1.15-ga-cuda8.0_1-1_amd64.deb"
+  echo "nccl not found"
+  exit 2
 fi
 
 URL="http://nccl2-deb.gz.bcebos.com/$DEB"
diff --git a/tools/manylinux1/Dockerfile.CI35-GCC8 b/tools/manylinux1/Dockerfile.CI35-GCC8
index 2e7264a3f52543945e3f814e9dc650442cf03ed6..e0c5d16bad64af4f026e6ec6aece9112ca4ef908 100644
--- a/tools/manylinux1/Dockerfile.CI35-GCC8
+++ b/tools/manylinux1/Dockerfile.CI35-GCC8
@@ -61,11 +61,11 @@ RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs4/lib:${LD_LIBRARY_PATH} /o
     LD_LIBRARY_PATH=/opt/_internal/cpython-3.7.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.7.0/bin/pip3 install -r /root/requirements.txt && \
     rm -rf /root/requirements.txt
 
-RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs4/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27mu/bin/pip install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs2/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27m/bin/pip install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.5.1/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.5.1/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.6.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.6.0/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.7.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.7.0/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python
+RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs4/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27mu/bin/pip install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs2/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27m/bin/pip install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.5.1/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.5.1/bin/pip3 install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.6.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.6.0/bin/pip3 install pre-commit 'ipython==5.3.0' && \ 
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.7.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.7.0/bin/pip3 install pre-commit 'ipython==5.3.0' 
 
 RUN wget -O /opt/swig-2.0.12.tar.gz https://sourceforge.net/projects/swig/files/swig/swig-2.0.12/swig-2.0.12.tar.gz/download && \
     cd /opt && tar xzf swig-2.0.12.tar.gz && cd /opt/swig-2.0.12 && ./configure && make && make install && cd /opt && rm swig-2.0.12.tar.gz
diff --git a/tools/manylinux1/Dockerfile.cuda10_cudnn7_gcc48_ubuntu16 b/tools/manylinux1/Dockerfile.cuda10_cudnn7_gcc48_ubuntu16
index e3a3374b943bc955d54afbef9755ed5147fad7d2..3fc9c7e34f7ed896c609f4758607ce10011aa01d 100644
--- a/tools/manylinux1/Dockerfile.cuda10_cudnn7_gcc48_ubuntu16
+++ b/tools/manylinux1/Dockerfile.cuda10_cudnn7_gcc48_ubuntu16
@@ -161,16 +161,12 @@ RUN pip3 --no-cache-dir install -U wheel py-cpuinfo==5.0.0 && \
 
 RUN pip3 --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
     pip3 --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip3 --no-cache-dir install opencv-python && \
     pip3.6 --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
     pip3.6 --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip3.6 --no-cache-dir install opencv-python && \
     pip3.7 --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
     pip3.7 --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip3.7 --no-cache-dir install opencv-python && \
     pip --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
-    pip --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip --no-cache-dir install opencv-python
+    pip --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' 
 
 #For docstring checker
 RUN pip3 --no-cache-dir install pylint pytest astroid isort
diff --git a/tools/manylinux1/Dockerfile.cuda10_cudnn7_gcc8_py35_centos6 b/tools/manylinux1/Dockerfile.cuda10_cudnn7_gcc8_py35_centos6
index fa80ae72c39ed4a389b0b7b895c7b90fe8c6f744..30f84141745cc8f9285ca98c6176c5bb608ae661 100644
--- a/tools/manylinux1/Dockerfile.cuda10_cudnn7_gcc8_py35_centos6
+++ b/tools/manylinux1/Dockerfile.cuda10_cudnn7_gcc8_py35_centos6
@@ -70,11 +70,11 @@ RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs4/lib:${LD_LIBRARY_PATH} /o
     LD_LIBRARY_PATH=/opt/_internal/cpython-3.7.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.7.0/bin/pip3 install -r /root/requirements.txt && \
     rm -rf /root/requirements.txt
 
-RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs4/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27mu/bin/pip install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs2/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27m/bin/pip install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.5.1/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.5.1/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.6.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.6.0/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.7.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.7.0/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python
+RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs4/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27mu/bin/pip install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs2/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27m/bin/pip install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.5.1/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.5.1/bin/pip3 install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.6.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.6.0/bin/pip3 install pre-commit 'ipython==5.3.0' && \ 
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.7.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.7.0/bin/pip3 install pre-commit 'ipython==5.3.0' 
 
 RUN wget -O /opt/swig-2.0.12.tar.gz https://sourceforge.net/projects/swig/files/swig/swig-2.0.12/swig-2.0.12.tar.gz/download && \
     cd /opt && tar xzf swig-2.0.12.tar.gz && cd /opt/swig-2.0.12 && ./configure && make && make install && cd /opt && rm swig-2.0.12.tar.gz
diff --git a/tools/manylinux1/Dockerfile.cuda10_cudnn7_gcc8_ubuntu16 b/tools/manylinux1/Dockerfile.cuda10_cudnn7_gcc8_ubuntu16
index c27fdcea2401c26b1ef1dd377c42930b6e74fcf0..ede8fa2cf861fea239055309ead32ab702013883 100644
--- a/tools/manylinux1/Dockerfile.cuda10_cudnn7_gcc8_ubuntu16
+++ b/tools/manylinux1/Dockerfile.cuda10_cudnn7_gcc8_ubuntu16
@@ -174,16 +174,12 @@ RUN pip3 --no-cache-dir install -U wheel py-cpuinfo==5.0.0 && \
 
 RUN pip3 --no-cache-dir install pre-commit==1.10.4 ipython==5.3.0  && \
     pip3 --no-cache-dir install ipykernel==4.6.0 jupyter==1.0.0  && \
-    pip3 --no-cache-dir install opencv-python  && \
     pip3.6 --no-cache-dir install pre-commit==1.10.4 ipython==5.3.0  && \
     pip3.6 --no-cache-dir install ipykernel==4.6.0 jupyter==1.0.0  && \
-    pip3.6 --no-cache-dir install opencv-python  && \
     pip3.7 --no-cache-dir install pre-commit==1.10.4 ipython==5.3.0  && \
     pip3.7 --no-cache-dir install ipykernel==4.6.0 jupyter==1.0.0  && \
-    pip3.7 --no-cache-dir install opencv-python  && \
     pip --no-cache-dir install pre-commit==1.10.4 ipython==5.3.0  && \
-    pip --no-cache-dir install ipykernel==4.6.0 jupyter==1.0.0  && \
-    pip --no-cache-dir install  opencv-python
+    pip --no-cache-dir install ipykernel==4.6.0 jupyter==1.0.0  
 
 #For docstring checker
 RUN pip3 --no-cache-dir install pylint pytest astroid isort 
diff --git a/tools/manylinux1/Dockerfile.cuda9_cudnn7_gcc48_py35_centos6 b/tools/manylinux1/Dockerfile.cuda9_cudnn7_gcc48_py35_centos6
index 1f972c583cb83c97c8f7bec96913a62ac32a1e5a..82918fca37f97bd37394d6faefee3a673218897f 100644
--- a/tools/manylinux1/Dockerfile.cuda9_cudnn7_gcc48_py35_centos6
+++ b/tools/manylinux1/Dockerfile.cuda9_cudnn7_gcc48_py35_centos6
@@ -56,11 +56,11 @@ RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs4/lib:${LD_LIBRARY_PATH} /o
     LD_LIBRARY_PATH=/opt/_internal/cpython-3.7.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.7.0/bin/pip3 install -r /root/requirements.txt && \
     rm -rf /root/requirements.txt
 
-RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs4/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27mu/bin/pip install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs2/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27m/bin/pip install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.5.1/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.5.1/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.6.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.6.0/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.7.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.7.0/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python
+RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs4/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27mu/bin/pip install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs2/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27m/bin/pip install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.5.1/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.5.1/bin/pip3 install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.6.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.6.0/bin/pip3 install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.7.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.7.0/bin/pip3 install pre-commit 'ipython==5.3.0' 
 
 RUN wget -O /opt/swig-2.0.12.tar.gz https://sourceforge.net/projects/swig/files/swig/swig-2.0.12/swig-2.0.12.tar.gz/download && \
     cd /opt && tar xzf swig-2.0.12.tar.gz && cd /opt/swig-2.0.12 && ./configure && make && make install && cd /opt && rm swig-2.0.12.tar.gz
diff --git a/tools/manylinux1/Dockerfile.x64 b/tools/manylinux1/Dockerfile.x64
index a02decb6a5af7838a3c1d3c1d810f0037477f869..7ad1b3554ab48184d033b70afe404918b96d27da 100644
--- a/tools/manylinux1/Dockerfile.x64
+++ b/tools/manylinux1/Dockerfile.x64
@@ -51,11 +51,11 @@ RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs4/lib:${LD_LIBRARY_PATH} /o
     go get github.com/Masterminds/glide && \
     rm -rf /root/requirements.txt
 
-RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs4/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27mu/bin/pip install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs2/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27m/bin/pip install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.5.1/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.5.1/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.6.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.6.0/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python && \
-    LD_LIBRARY_PATH=/opt/_internal/cpython-3.7.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.7.0/bin/pip3 install pre-commit 'ipython==5.3.0' opencv-python
+RUN LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs4/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27mu/bin/pip install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs2/lib:${LD_LIBRARY_PATH} /opt/python/cp27-cp27m/bin/pip install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.5.1/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.5.1/bin/pip3 install pre-commit 'ipython==5.3.0' && \
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.6.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.6.0/bin/pip3 install pre-commit 'ipython==5.3.0' && \ 
+    LD_LIBRARY_PATH=/opt/_internal/cpython-3.7.0/lib/:${LD_LIBRARY_PATH} /opt/_internal/cpython-3.7.0/bin/pip3 install pre-commit 'ipython==5.3.0' 
 
 RUN wget -O /opt/swig-2.0.12.tar.gz https://sourceforge.net/projects/swig/files/swig/swig-2.0.12/swig-2.0.12.tar.gz/download && \
     cd /opt && tar xzf swig-2.0.12.tar.gz && cd /opt/swig-2.0.12 && ./configure && make && make install && cd /opt && rm swig-2.0.12.tar.gz
diff --git a/tools/manylinux1/build_scripts/install_nccl2.sh b/tools/manylinux1/build_scripts/install_nccl2.sh
index 01ee51765f55198fb11c082f54de15bd902c3640..628c782726bf6fc1e05d8fa762f445145e119f10 100644
--- a/tools/manylinux1/build_scripts/install_nccl2.sh
+++ b/tools/manylinux1/build_scripts/install_nccl2.sh
@@ -2,12 +2,17 @@
 VERSION=$(nvcc --version | grep release | grep -oEi "release ([0-9]+)\.([0-9])"| sed "s/release //")
 if [ "$VERSION" == "10.0" ]; then
   DEB="nccl-repo-ubuntu1604-2.4.7-ga-cuda10.0_1-1_amd64.deb"
+elif [ "$VERSION" == "11.0" ]; then
+  DEB="nccl-repo-ubuntu1604-2.7.8-ga-cuda11.0_1-1_amd64.deb"
+elif [ "$VERSION" == "10.2" ]; then
+  DEB="nccl-repo-ubuntu1604-2.7.8-ga-cuda10.2_1-1_amd64.deb"
 elif [ "$VERSION" == "10.1" ]; then
-  DEB="nccl-repo-ubuntu1604-2.4.7-ga-cuda10.0_1-1_amd64.deb"
+  DEB="nccl-repo-ubuntu1604-2.7.8-ga-cuda10.1_1-1_amd64.deb"
 elif [ "$VERSION" == "9.0" ]; then
-  DEB="nccl-repo-ubuntu1604-2.1.15-ga-cuda9.0_1-1_amd64.deb"
+  DEB="nccl-repo-ubuntu1604-2.3.7-ga-cuda9.0_1-1_amd64.deb"
 else
-  DEB="nccl-repo-ubuntu1604-2.1.15-ga-cuda8.0_1-1_amd64.deb"
+  echo "nccl not found"
+  exit 2
 fi
 
 URL="http://nccl2-deb.gz.bcebos.com/$DEB"
@@ -16,7 +21,7 @@ DIR="/nccl2"
 mkdir -p $DIR
 # we cached the nccl2 deb package in BOS, so we can download it with wget
 # install nccl2: http://docs.nvidia.com/deeplearning/sdk/nccl-install-guide/index.html#down
-wget --no-proxy -O $DIR/$DEB $URL
+wget -O $DIR/$DEB $URL
 
 cd $DIR && ar x $DEB && tar xf data.tar.xz
 DEBS=$(find ./var/ -name "*.deb")
diff --git a/tools/xly_Dockerfile/Dockerfile.GCC8 b/tools/xly_Dockerfile/Dockerfile.GCC8
index 81de81365da0c43fa97d69620e7d29f4f1ab9407..f453d50263be10c02d2ca274b80012ac4030fec3 100644
--- a/tools/xly_Dockerfile/Dockerfile.GCC8
+++ b/tools/xly_Dockerfile/Dockerfile.GCC8
@@ -147,16 +147,12 @@ RUN pip3 --no-cache-dir install -U wheel py-cpuinfo==5.0.0 && \
 
 RUN pip3 --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
     pip3 --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip3 --no-cache-dir install opencv-python && \
     pip3.6 --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
     pip3.6 --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip3.6 --no-cache-dir install opencv-python && \
     pip3.7 --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
     pip3.7 --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip3.7 --no-cache-dir install opencv-python && \
     pip --no-cache-dir install 'pre-commit==1.10.4' 'ipython==5.3.0' && \
-    pip --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' && \
-    pip --no-cache-dir install opencv-python
+    pip --no-cache-dir install 'ipykernel==4.6.0' 'jupyter==1.0.0' 
 
 #For docstring checker
 RUN pip3 --no-cache-dir install pylint pytest astroid isort