fix #558 Dockerfile

Dockerfile

@@ -32,6 +32,7 @@ RUN cd /tmp && curl -O http://mirrors.neusoft.edu.cn/android/repository/android-
 RUN curl -O https://mms-res.cdn.bcebos.com/cmake-3.10.3-Linux-x86_64.tar.gz && \
         tar xzf cmake-3.10.3-Linux-x86_64.tar.gz && \
         mv cmake-3.10.3-Linux-x86_64 /opt/cmake-3.10 && \
-        mv /usr/bin/cmake /usr/bin/cmake.bak && ln -s /opt/cmake-3.10/bin/cmake /usr/bin/cmake
+        mv /usr/bin/cmake /usr/bin/cmake.bak && ln -s /opt/cmake-3.10/bin/cmake /usr/bin/cmake && \
+        mv /usr/bin/ccmake /usr/bin/ccmake.bak && ln -s /opt/cmake-3.10/bin/ccmake /usr/bin/ccmake
 RUN cd /opt && unzip /tmp/android-ndk-r17b-linux-x86_64.zip
 ENV NDK_ROOT /opt/android-ndk-r17b

doc/build.md

@@ -19,9 +19,14 @@ paddle-mobile   dev     33b146787711   45 hours ago    372MB
 ```
 $ docker run -it --mount type=bind,source=$PWD,target=/paddle-mobile paddle-mobile:dev
 root@5affd29d4fc5:/ # cd /paddle-mobile
+###
+### paddle-mobile 支持 arm 架构下的各种平台，包括 android 以及 linux 等，可以使用不同的
+### toolchain 文件生成满足需要的 makefile
+###
 # 生成构建 android 产出的 Makefile
 root@5affd29d4fc5:/ # rm CMakeCache.txt
 root@5affd29d4fc5:/ # cmake -DCMAKE_TOOLCHAIN_FILE=tools/toolchains/arm-android-neon.cmake
+
 # 生成构建 linux 产出的 Makefile
 root@5affd29d4fc5:/ # rm CMakeCache.txt
 root@5affd29d4fc5:/ # cmake -DCMAKE_TOOLCHAIN_FILE=tools/toolchains/arm-linux-gnueabi.cmake