diff --git a/tools/docker/Dockerfile.aliyunlinux3 b/tools/docker/Dockerfile.aliyunlinux3
index 62147c23..8f306e17 100644
--- a/tools/docker/Dockerfile.aliyunlinux3
+++ b/tools/docker/Dockerfile.aliyunlinux3
@@ -125,7 +125,7 @@ RUN wget http://www.etallen.com/cpuid/cpuid-20200211.x86_64.tar.gz && \
 # Download the Occlum source
 ARG OCCLUM_BRANCH
 WORKDIR /root
-RUN git clone -b $OCCLUM_BRANCH https://github.com/occlum/occlum && \
+RUN git clone -b $OCCLUM_BRANCH https://gitea.detee.cloud/general/occlum && \
     cp -r /root/occlum/tools/toolchains/* /tmp/ && mkdir -p /opt/occlum/ && \
     cp /root/occlum/tools/docker/start_aesm.sh /opt/occlum/
 
diff --git a/tools/docker/Dockerfile.anolis8.8 b/tools/docker/Dockerfile.anolis8.8
index b290d400..0f34cc18 100644
--- a/tools/docker/Dockerfile.anolis8.8
+++ b/tools/docker/Dockerfile.anolis8.8
@@ -129,7 +129,7 @@ RUN wget http://www.etallen.com/cpuid/cpuid-20200211.x86_64.tar.gz && \
 # Download the Occlum source
 ARG OCCLUM_BRANCH
 WORKDIR /root
-RUN git clone -b $OCCLUM_BRANCH https://github.com/occlum/occlum && \
+RUN git clone -b $OCCLUM_BRANCH https://gitea.detee.cloud/general/occlum && \
     cd /root/occlum && git submodule update --init && \
     mkdir -p /opt/occlum/ && \
     cp /root/occlum/tools/docker/start_aesm.sh /opt/occlum/
diff --git a/tools/docker/Dockerfile.ubuntu20.04 b/tools/docker/Dockerfile.ubuntu20.04
index 6b97a097..d5244b50 100644
--- a/tools/docker/Dockerfile.ubuntu20.04
+++ b/tools/docker/Dockerfile.ubuntu20.04
@@ -136,7 +136,7 @@ RUN git clone -b sgx_2.20_for_occlum https://github.com/occlum/linux-sgx && \
 # Download the Occlum source
 ARG OCCLUM_BRANCH
 WORKDIR /root
-RUN git clone -b $OCCLUM_BRANCH https://github.com/occlum/occlum && \
+RUN git clone -b $OCCLUM_BRANCH https://gitea.detee.cloud/general/occlum && \
     cd /root/occlum && git submodule update --init && \
     mkdir -p /opt/occlum/ && \
     cp /root/occlum/tools/docker/start_aesm.sh /opt/occlum/
@@ -184,9 +184,9 @@ COPY --from=alpine /usr/lib/jvm/java-1.8-openjdk $JDK8_PATH
 RUN rm $JDK8_PATH/jre/lib/security/cacerts
 COPY --from=alpine /etc/ssl/certs/java/cacerts $JDK8_PATH/jre/lib/security/cacerts
 
-# Install DCAP library
+# Install DCAP and Utilities libraries
 WORKDIR /root/occlum/tools/toolchains
-RUN cd dcap_lib && ./build.sh && cd .. && rm -rf dcap_lib
+RUN cd dcap_lib && ./build.sh && cd ../utils_lib && ./build.sh && cd .. && rm -rf utils_lib dcap_lib
 
 # Install AECS Client library
 WORKDIR /root/occlum/tools/toolchains