chore: record post-processor-changes.txt for java docker image (#1123)

Author: Neenu1995

docker/owlbot/java/Dockerfile

@@ -22,6 +22,7 @@ RUN apt-get install -y --no-install-recommends jq
 COPY docker/owlbot/java/bin /owlbot/bin
 COPY docker/owlbot/java/src /owlbot/src
 COPY docker/owlbot/java/templates /owlbot/templates
+COPY post-processor-changes.txt /post-processor-changes.txt
 RUN cd /owlbot/src && \
     python3 -m pip install -r requirements.txt
 

docker/owlbot/java/cloudbuild.yaml

@@ -12,6 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 steps:
+  # Write the latest commit message to a file in the workspace.
+  - name: 'gcr.io/cloud-builders/git'
+    entrypoint: '/bin/sh'
+    args:
+      - '-c'
+      - 'git log -1 --format="%s%n%n%b%nSource-Link: https://github.com/googleapis/synthtool/commit/%H" > post-processor-changes.txt'
+  # Build the docker image.
   - name: "gcr.io/cloud-builders/docker"
     args: [ "build",
       "-t", "gcr.io/$PROJECT_ID/owlbot-java:$SHORT_SHA",

docker/owlbot/java/cloudbuild_test.yaml

@@ -12,6 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 steps:
+  # Write the latest commit message to a file in the workspace.
+  - name: 'gcr.io/cloud-builders/git'
+    entrypoint: '/bin/sh'
+    args:
+      - '-c'
+      - 'git log -1 --format="%s%n%n%b%nSource-Link: https://github.com/googleapis/synthtool/commit/%H" > post-processor-changes.txt'
+  # Build the docker image.
   - name: "gcr.io/cloud-builders/docker"
     args: [ "build",
       "-t", "gcr.io/$PROJECT_ID/owlbot-java:$SHORT_SHA",