Update traffic-monitor-api.yml

Author: Chris Wiechmann

.github/workflows/traffic-monitor-api.yml

@@ -58,12 +58,15 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+    - name: Get release version
+      id: get_version
+      run: echo ::set-env name=RELEASE_VERSION::$(echo ${GITHUB_REF:10})
     - name: Publish Docker image
       uses: elgohr/Publish-Docker-Github-Action@2.13
       with:
         name: cwiechmann/elk-traffic-monitor-api
         workdir: ${{env.workingDirectory}}
         username: ${{ secrets.DOCKER_USERNAME }}
         password: ${{ secrets.DOCKER_PASSWORD }}
-        snapshot: true
+        tags: "latest,${{ env.RELEASE_VERSION }}"