refactor(librariangen): move docker build to local script

The Docker build and test steps were moved from the GitHub Actions workflow to a local script. This is because the base Docker image is not accessible from GitHub Actions.

The CI workflow now only runs the Go tests. The new `build-docker-and-test.sh` script can be used to build the Docker image and run the version check locally.

Author: meltsufin

.github/workflows/librariangen-ci.yml

@@ -30,20 +30,3 @@ jobs:
         run: go test ./...
         working-directory: internal/librariangen
 
-      - name: Build Docker image
-        run: docker build -t librariangen-test ./internal/librariangen
-
-      - name: Run version command
-        id: version
-        run: |
-          output=$(docker run --rm -e GOOGLE_SDK_JAVA_LOGGING_LEVEL=quiet librariangen-test --version)
-          echo "version_output=$output" >> $GITHUB_OUTPUT
-
-      - name: Verify version
-        run: |
-          version_output="${{ steps.version.outputs.version_output }}"
-          if [[ ! "$version_output" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
-            echo "Version format is incorrect. Got: $version_output"
-            exit 1
-          fi
-          echo "Version check passed. Version is $version_output"

internal/librariangen/build-docker-and-test.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+set -e
+SCRIPT_DIR=$(dirname "$0")
+IMAGE_NAME="librariangen-test"
+
+echo "Building Docker image..."
+docker build -t "${IMAGE_NAME}" "${SCRIPT_DIR}"
+
+echo "Running version check..."
+output=$(docker run --rm -e GOOGLE_SDK_JAVA_LOGGING_LEVEL=quiet "${IMAGE_NAME}" --version)
+
+if [[ ! "$output" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+  echo "Version format is incorrect. Got: $output"
+  exit 1
+fi
+
+echo "Version check passed. Version is $output"