Modify python-glibc demo with copy_bom

demos/python/python_glibc/install_python_with_conda.sh

@@ -8,5 +8,5 @@ script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}"  )" >/dev/null 2>&1 && pwd )"
 # 2. Install python and dependencies to specified position
 [ -d Miniconda3-latest-Linux-x86_64.sh ] || wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh
 [ -d miniconda ] || bash ./Miniconda3-latest-Linux-x86_64.sh -b -p $script_dir/miniconda
-$script_dir/miniconda/bin/conda create --prefix $script_dir/occlum_instance/image/opt/python-occlum -y python=3.7 numpy=1.18.1 pandas=0.24.2 scipy=1.3.1 Cython scikit-learn=0.21.1
+$script_dir/miniconda/bin/conda create --prefix $script_dir/python-occlum -y python=3.7 numpy=1.18.1 pandas=0.24.2 scipy=1.3.1 Cython scikit-learn=0.21.1
 

demos/python/python_glibc/python-glibc.yaml

@@ -0,0 +1,25 @@
+includes:
+  - base.yaml
+targets:
+  - target: /bin
+    createlinks:
+      - src: /opt/python-occlum/bin/python3
+        linkname: python3
+  # python packages
+  - target: /opt
+    copy: 
+      - dirs:
+          - ../python-occlum
+  # explicit copy python3 to enable autodep for python3
+  - target: /opt/python-occlum/bin
+    copy:
+      - files:
+        - ../python-occlum/bin/python3
+  # below are python code and data
+  - target: /
+    copy:
+      - from: ..
+        dirs:
+          - dataset
+        files: 
+          - demo.py

demos/python/python_glibc/run_python_on_occlum.sh

@@ -7,27 +7,20 @@ NC='\033[0m'
 script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}"  )" >/dev/null 2>&1 && pwd )"
 python_dir="$script_dir/occlum_instance/image/opt/python-occlum"
 
+cd occlum_instance && rm -rf image
+copy_bom -f ../python-glibc.yaml --root image --include-dir /opt/occlum/etc/template
+
 if [ ! -d $python_dir ];then
     echo "Error: cannot stat '$python_dir' directory"
     exit 1
 fi
 
-cd occlum_instance
-# Copy files into Occlum Workspace and build
-if [ ! -L "image/bin/python3" ];then
-    ln -s /opt/python-occlum/bin/python3 image/bin/python3
-    cp -f /opt/occlum/glibc/lib/libdl.so.2 image/opt/occlum/glibc/lib/
-    cp -f /opt/occlum/glibc/lib/libutil.so.1 image/opt/occlum/glibc/lib/
-    cp -f /opt/occlum/glibc/lib/librt.so.1 image/opt/occlum/glibc/lib/
-    cp -rf ../dataset image
-    cp -f ../demo.py image
-    new_json="$(jq '.resource_limits.user_space_size = "640MB" |
-                    .resource_limits.kernel_space_heap_size = "256MB" |
-                    .process.default_mmap_size = "512MB" |
-                    .env.default += ["PYTHONHOME=/opt/python-occlum"]' Occlum.json)" && \
-    echo "${new_json}" > Occlum.json
-    occlum build
-fi
+new_json="$(jq '.resource_limits.user_space_size = "640MB" |
+        .resource_limits.kernel_space_heap_size = "256MB" |
+        .process.default_mmap_size = "512MB" |
+        .env.default += ["PYTHONHOME=/opt/python-occlum"]' Occlum.json)" && \
+echo "${new_json}" > Occlum.json
+occlum build
 
 # Run the python demo
 echo -e "${BLUE}occlum run /bin/python3 demo.py${NC}"