diff --git a/README.md b/README.md
index eac941a961a720b9476d352a4711a8270352a36f..bc9692e9164bfb1f5f9757080c025e790d611dd8 100644
--- a/README.md
+++ b/README.md
@@ -68,5 +68,5 @@ Please refer to [this guide](docs/develop_and_deploy_hello_world_application_in_
 ---
 
 ## Reference container image
-[The reference container images](https://hub.docker.com/u/inclavarecontainers) are available for the demonstration purpose to show how a Confidential Computing Kubernetes Cluster with Inclavare Containers works. Currently, web application demos based on OpenJDK 11 and Golang are provided.
+[The reference container images](https://hub.docker.com/u/inclavarecontainers) are available for the demonstration purpose to show how a Confidential Computing Kubernetes Cluster with Inclavare Containers works. Currently, web application demos based on OpenJDK 11, Dragonwell, and Golang are provided.
 
diff --git a/docs/running_rune_with_occlum.md b/docs/running_rune_with_occlum.md
index 2bf88b14f0c0f2e3c15c002e3f67ac5df4648255..f0a1eb5f03aaa746e3dcff21f79eef3295d60c2d 100644
--- a/docs/running_rune_with_occlum.md
+++ b/docs/running_rune_with_occlum.md
@@ -96,7 +96,7 @@ rpm -ivh occlum-pal-0.15.1-1.el8.x86_64.rpm
 - On Ubuntu 18.04-server:
 ```shell
 dpkg -i rune_0.4.0-1_amd64.deb
-dpkg -i occlum-pal_0.15.1_amd64.deb
+dpkg -i occlum-pal_0.15.1-1_amd64.deb
 ```
 
 ---
diff --git a/rune/libenclave/internal/runtime/pal/skeleton/README.md b/rune/libenclave/internal/runtime/pal/skeleton/README.md
index 50a0db8c537bb50633d17dc52d37d877a1ed4a84..a5710b1a9e66d2110361435f18866433c4d3f4b2 100644
--- a/rune/libenclave/internal/runtime/pal/skeleton/README.md
+++ b/rune/libenclave/internal/runtime/pal/skeleton/README.md
@@ -35,6 +35,8 @@ EOF
 docker build . -t skeleton-enclave
 ```
 
+[Skeleton container image](https://hub.docker.com/r/inclavarecontainers/skeleton-enclave/tags) is available for the demonstration purpose.
+
 ## Build and install rune
 Please refer to [this guide](https://github.com/alibaba/inclavare-containers#rune) to build `rune` from scratch.
 
diff --git a/sgx-tools/README.md b/sgx-tools/README.md
index 1bc20dae80dfbce797937862a4a881edcfb9da34..2d62e4b4eb4af44c7e72bde2d1265cc6e0243e43 100644
--- a/sgx-tools/README.md
+++ b/sgx-tools/README.md
@@ -7,10 +7,10 @@
 
 ## Install Intel `aesmd` service
 ### Hardware requirements
-- Install [Intel SGX driver for Linux](https://github.com/intel/linux-sgx-driver#build-and-install-the-intelr-sgx-driver), required by [Intel SGX SDK && PSW](https://github.com/intel/linux-sgx).
+- Install Intel SGX driver for Linux by following [Intel SGX Installation Guide](https://download.01.org/intel-sgx/sgx-linux/2.9.1/docs/Intel_SGX_Installation_Guide_Linux_2.9.1_Open_Source.pdf), required by [Intel SGX SDK && PSW](https://github.com/intel/linux-sgx).
 
 ### Software requirements
-- Build [Intel(R) SGX SDK and Intel(R) SGX PSW](https://github.com/intel/linux-sgx#build-the-intelr-sgx-sdk-and-intelr-sgx-psw-package) to install the `aesmd` service.
+- Build Intel(R) SGX SDK and Intel(R) SGX PSW by following [Intel SGX Installation Guide](https://download.01.org/intel-sgx/sgx-linux/2.9.1/docs/Intel_SGX_Installation_Guide_Linux_2.9.1_Open_Source.pdf) to install the `aesmd` service.
 
 ## Dependency
 - golang 1.14 or above.