ci(github): Run Docker as the GitHub user to simplify code

Signed-off-by: Sebastian Schuberth <[email protected]>

.github/workflows/build-and-test.yml

@@ -146,22 +146,16 @@ jobs:
         gradle-home-cache-cleanup: true
     - name: Run functional tests that do require external tools
       run: |
-        # Change the ownership of the Gradle user home and the workspace to the user in the Docker container.
-        sudo chown -R 1000:1000 /home/runner/.gradle
-        sudo chown -R 1000:1000 ${{ github.workspace }}
-
         # Run the functional tests in the Docker container.
         docker run \
+          # Override running as user "ort" (UID 1000) as hard-coded in the "all-tools" target.
+          -u $(id -u):$(id -g) \
+          -v /home/runner:/home/runner \
           -v ${{ github.workspace }}:/workspace \
-          -v /home/runner/.gradle:/home/ort/.gradle \
           -w /workspace \
-          --entrypoint=/bin/sh \
+          -e GRADLE_USER_HOME=/home/runner/.gradle \
           ${{ env.TEST_IMAGE_TAG }} \
-          -c "GRADLE_USER_HOME=/home/ort/.gradle ./gradlew --scan -Ptests.include=org.ossreviewtoolkit.plugins.packagemanagers.* funTest jacocoFunTestReport"
-
-        # Change the ownership of the Gradle user home and the workspace back to the user in the GitHub Actions runner.
-        sudo chown -R 1001:121 /home/runner/.gradle
-        sudo chown -R 1001:121 ${{ github.workspace }}
+          -c "./gradlew --scan -Ptests.include=org.ossreviewtoolkit.plugins.packagemanagers.* funTest jacocoFunTestReport"
     - name: Upload code coverage data
       uses: codecov/codecov-action@v4
       with: