Update go web_server demo with bom file

demos/golang/web_server/run_golang_on_occlum.sh

@@ -21,7 +21,8 @@ new_json="$(jq '.resource_limits.user_space_size = "1000MB" |
 echo "${new_json}" > Occlum.json
 
 # 2. Copy program into Occlum Workspace and build
-cp ../web_server image/bin
+rm -rf image && \
+copy_bom -f ../web_server.yaml --root image --include-dir /opt/occlum/etc/template && \
 occlum build
 
 # 3. Run the web server sample

demos/golang/web_server/web_server.yaml

@@ -0,0 +1,7 @@
+includes:
+  - base.yaml
+targets:
+  - target: /bin
+    copy:
+      - files:
+        - ../web_server