GitHub Actions: Debugging, Logs, and Troubleshooting

echo "::group::Install dependencies"
npm ci
echo "::endgroup::"

# Group related output in the Actions log.

echo "::notice title=Build::Build completed successfully"

# Add an informational annotation to the run log.

echo "::warning file=package.json,line=1::Deprecated config detected"

# Highlight a non-fatal issue in the run log.

echo "::error file=src/app.js,line=42::Build failed"

# Mark a step error with file context.

echo "## Test Summary" >> "$GITHUB_STEP_SUMMARY"

# Add a rich markdown summary to the workflow run.

set -euo pipefail

# Fail fast in shell scripts.

jq . "$GITHUB_EVENT_PATH"

# Dump the event JSON file path or contents for debugging.

find . -maxdepth 3 -type f | sort | head -200

# Check that expected files exist after checkout or artifact download.

- uses: actions/checkout@v4

# Avoid unexpected behavior from drifting dependencies.

for i in 1 2 3; do
  npm install && break
  sleep 5
done

# Wrap transient operations in a simple retry loop.