Fix chmod from Dockerfile (#891)

The Docker command doesn't work after new release of moby/buildkit. This
PR use moby/buildkit:v0.15.1 version to re-use --chmod=go+r for jar
agent build.


By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 license.

.github/actions/cpUtility-testing/action.yml

@@ -29,6 +29,8 @@ runs:
 
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
+      with:
+        driver-opts: image=moby/buildkit:v0.15.1
 
     - name: Configure AWS Credentials
       uses: aws-actions/configure-aws-credentials@v4

.github/workflows/pr-build.yml

@@ -103,6 +103,8 @@ jobs:
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
+        with:
+          driver-opts: image=moby/buildkit:v0.15.1
         if: ${{ matrix.os == 'ubuntu-latest' }}
 
       - name: Build image for testing

Dockerfile

@@ -51,4 +51,4 @@ ARG ADOT_JAVA_VERSION
 COPY --from=builder /usr/src/cp-utility/bin/cp-utility /bin/cp
 
 
-COPY --chmod=0644 ./otelagent/build/libs/aws-opentelemetry-agent-${ADOT_JAVA_VERSION}.jar  /javaagent.jar
+COPY --chmod=go+r ./otelagent/build/libs/aws-opentelemetry-agent-${ADOT_JAVA_VERSION}.jar /javaagent.jar