chore: update hermetic build docker volume usage

.github/workflows/hermetic_library_generation.yaml

@@ -24,7 +24,7 @@ jobs:
   library_generation:
     runs-on: ubuntu-latest
     env:
-      library_generation_image_tag: 2.39.0
+      library_generation_image_tag: 2.40.0
     steps:
     - uses: actions/checkout@v4
       with:

generation/hermetic_library_generation.sh

@@ -70,9 +70,7 @@ if [ -z "${generation_config}" ]; then
   echo "Use default generation config: ${generation_config}"
 fi
 
-volume_name="repo"
-workspace_name="/workspace/repo"
-repo_volumes="${volume_name}:${workspace_name}"
+workspace_name="/workspace"
 baseline_generation_config="baseline_generation_config.yaml"
 message="chore: generate libraries at $(date)"
 
@@ -89,28 +87,14 @@ fi
 git show "${target_branch}":"${generation_config}" > "${baseline_generation_config}"
 config_diff=$(diff "${generation_config}" "${baseline_generation_config}")
 
-# bind docker volume to include the repository in docker running environment.
-if [[ $(docker volume inspect ${volume_name}) != '[]' ]]; then
-  docker volume rm ${volume_name}
-fi
-docker volume create \
-  --name ${volume_name} \
-  --opt "type=none" \
-  --opt "device=$(pwd)" \
-  --opt "o=bind"
 # run hermetic code generation docker image.
 docker run \
   --rm \
-  -v "${repo_volumes}" \
-  -v /tmp:/tmp \
-  -v /var/run/docker.sock:/var/run/docker.sock \
-  -e "RUNNING_IN_DOCKER=true" \
-  -e "REPO_BINDING_VOLUMES=-v ${repo_volumes}" \
+  -u "$(id -u):$(id -g)" \
+  -v "$(pwd):${workspace_name}" \
   gcr.io/cloud-devrel-public-resources/java-library-generation:"${image_tag}" \
-  python /src/cli/entry_point.py generate \
   --baseline-generation-config-path="${workspace_name}/${baseline_generation_config}" \
-  --current-generation-config-path="${workspace_name}/${generation_config}" \
-  --repository-path="${workspace_name}"
+  --current-generation-config-path="${workspace_name}/${generation_config}"
 # commit the change to the pull request.
 git add java-* pom.xml gapic-libraries-bom/pom.xml versions.txt
 changed_files=$(git diff --cached --name-only)

generation/new_client_hermetic_build/README.md

@@ -158,19 +158,11 @@ was modified (or the script exited because the library already existed).
 
 The last step you need is to `cd` into the root of `google-cloud-java` and run
 ```
-docker volume create --name "repo-google-cloud-java" --opt "type=none" --opt "device=$(pwd)" --opt "o=bind"
-repo_volumes="-v repo-google-cloud-java:/workspace/google-cloud-java"
-docker run --rm \
-  ${repo_volumes} \
-  -v /tmp:/tmp \
-  -v /var/run/docker.sock:/var/run/docker.sock \
-  -e "RUNNING_IN_DOCKER=true" \
-  -e "REPO_BINDING_VOLUMES=${repo_volumes}" \
-  gcr.io/cloud-devrel-public-resources/java-library-generation:latest \
-  python /src/generate_repo.py generate \
-  --generation-config-yaml=/workspace/google-cloud-java/generation_config.yaml \
-  --repository-path=/workspace/google-cloud-java \
-  --target-library-names=<library_name if specified; otherwise api_shortname>
+docker run --rm -u $(id -u):$(id -g) -v $(pwd):/workspace --entrypoint \
+    python gcr.io/cloud-devrel-public-resources/java-library-generation:latest \
+    /src/generate_repo.py generate \
+    --target-library-names=contentwarehouse \
+    --generation-config-yaml=/workspace/generation_config.yaml
 
 ```