Modify flink demo with copy_bom

demos/flink/flink.yaml

@@ -0,0 +1,23 @@
+includes: 
+  - base.yaml
+  - java-11-openjdk-amd64.yaml
+targets: 
+  # copy flink directory
+  - target: /bin
+    copy: 
+      - from: ../flink-1.10.1
+  # copy hosts file
+  - target: /etc
+    copy: 
+      - files: 
+          - ../hosts
+  # copy localtime
+  - target: /etc
+    copy: 
+      - files: 
+          - /etc/localtime
+  # copy libnss_files
+  - target: /opt/occlum/glibc/lib
+    copy: 
+      - files: 
+          - /opt/occlum/glibc/lib/libnss_files.so.2

demos/flink/run_flink_on_occlum_glibc.sh

@@ -28,15 +28,8 @@ init_instance() {
 
 build_flink() {
     # Copy JVM and class file into Occlum instance and build
-    mkdir -p image/usr/lib/jvm
+    rm -rf image
-    cp -r /usr/lib/jvm/java-11-openjdk-amd64 image/usr/lib/jvm
+    copy_bom -f ../flink.yaml --root image --include-dir /opt/occlum/etc/template
-    cp /lib/x86_64-linux-gnu/libz.so.1 image/lib
-    cp $occlum_glibc/libdl.so.2 image/$occlum_glibc
-    cp $occlum_glibc/librt.so.1 image/$occlum_glibc
-    cp $occlum_glibc/libm.so.6 image/$occlum_glibc
-    cp $occlum_glibc/libnss_files.so.2 image/$occlum_glibc
-    cp -rf ../flink-1.10.1/* image/bin/
-    cp -rf ../hosts image/etc/
     occlum build
 }
 

etc/template/java-11-openjdk-amd64.yaml

@@ -0,0 +1,21 @@
+# glibc backend openjdk
+targets:
+  # copy jvm
+  - target: /usr/lib/jvm
+    copy:
+      - dirs:
+        - /usr/lib/jvm/java-11-openjdk-amd64
+  - target: /etc
+    copy:
+      - dirs:
+        - /etc/java-11-openjdk
+  # explicit copy java to enable autodep for java
+  - target: /usr/lib/jvm/java-11-openjdk-amd64/bin
+    copy:
+      - files:
+        - /usr/lib/jvm/java-11-openjdk-amd64/bin/java
+  # explicit copy libjvm to enable autodep for this library 
+  - target: /usr/lib/jvm/java-11-openjdk-amd64/lib/server
+    copy:
+      - files:
+        - /usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so

etc/template/java-11-openjdk.yaml

@@ -1,3 +1,4 @@
+# musl backend openjdk
 targets:
   # copy jvm
   - target: /usr/lib/jvm

tools/copy_bom/.gitignore

@@ -9,3 +9,4 @@ base.yaml
 occlum_elf_loader.config
 java-11-alibaba-dragonwell.yaml
 java-11-openjdk.yaml
+java-11-openjdk-amd64.yaml