feat: add Datadog monitoring

.github/workflows/deploy-online-serverest.yml

@@ -66,6 +66,7 @@ jobs:
       env:
         OP_SERVICE_ACCOUNT_TOKEN: ${{ secrets.OP_SERVICE_ACCOUNT_TOKEN }}
         GCP_IAM_SERVICE_ACCOUNT_KEY: op://CI-CD/google-cloud/SERVICE_ACCOUNT_KEY
+        DD_API_KEY: op://CI-CD/Datadog/DD_API_KEY
     - name: Set up Cloud SDK
       uses: google-github-actions/setup-gcloud@v0
     - name: Authentication on GCloud
@@ -80,7 +81,12 @@ jobs:
         gcloud run \
           deploy $SERVICE_STAGING \
           --image gcr.io/$PROJECT_ID/$SERVICE_NAME:${{ github.sha }} \
-          --region $REGION
+          --region $REGION \
+          --update-env-vars=DD_API_KEY=$DD_API_KEY \
+          --update-env-vars=DD_TRACE_ENABLED=true \
+          --update-env-vars=DD_SITE='datadoghq.eu' \
+      env:
+        DD_API_KEY: ${{ env.DD_API_KEY }}
 
   test-e2e-staging:
     name: E2E test on staging environment

Dockerfile

@@ -6,6 +6,13 @@ LABEL repository="https://github.com/ServeRest/ServeRest" \
       homepage="https://github.com/ServeRest/ServeRest" \
       maintainer="Paulo Gonçalves <https://www.linkedin.com/in/paulo-goncalves/>"
 
+COPY --from=datadog/serverless-init:1-alpine /datadog-init /app/datadog-init
+COPY --from=datadog/dd-lib-js-init /operator-build/node_modules /dd_tracer/node/
+ENV DD_SERVICE=datadog-demo-run-nodejs
+ENV DD_ENV=$USERNAME
+ENV DD_VERSION=1
+ENV DD_LOGS_ENABLED=true
+
 WORKDIR /app
 
 COPY package*.json ./
@@ -19,5 +26,5 @@ ENV USERNAME='docker'
 ENV TERM=xterm-256color
 
 EXPOSE 3000
-
-ENTRYPOINT [ "npm", "start", "--" ]
+ENTRYPOINT ["/app/datadog-init"]
+CMD ["npm", "start", "--"]