Creating Github actions workflow to migrate CI/CD pipeline away from Jenkins

.github/workflows/actions/deploy/action.yaml

@@ -0,0 +1,113 @@
+name: Deploy
+description: Deploy to OpenShift namespace
+
+inputs:
+  environment:
+    description: The environment to which the image will be deployed.
+    required: true
+
+  # Image parameters
+  ghcr_token:
+    description: The token to use to login to the GHCR.
+    required: true
+  github_image_name:
+    description: The name of the image in the GHCR to be deployed.
+    required: true
+  image_digest:
+    description: The digest of the image to be deployed. Identifies the unique image tag in the GHCR.
+    required: true
+  openshift_image_name:
+    description: The name of the image to use when pushing to OpenShift.
+    required: true
+
+  # OpenShift parameters
+  openshift_server_url:
+    description: The URL of the OpenShift server.
+    required: true
+  namespace:
+    description: The OpenShift namespace where the image is to be deployed.
+    required: true
+  deployment_configuration:
+    description: The name of the OpenShift deployment configuration triggered by the new image.
+    required: true
+  openshift_token:
+    description: The token used to authenticate with the OpenShift server.
+    required: true
+
+  # rocket.chat notification parameters
+  rocketchat_webhook:
+    description: The URL to use for posting notifications to rocket.chat.
+    required: true
+
+runs:
+  using: composite
+  steps:
+    - name: Log in to the GHCR
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ inputs.ghcr_token }}
+
+    - name: Setup Openshift CLI
+      uses: redhat-actions/oc-login@v1
+      with:
+        openshift_server_url: ${{ inputs.openshift_server_url }}
+        openshift_token: ${{ inputs.openshift_token }}
+
+    - name: Login in to OpenShift container registry
+      shell: bash
+      env: 
+        REGISTRY_AUTH_PREFERENCE: docker
+      run: |
+        oc version
+        docker version
+
+        # Openshift pipeline is currently running on 14.4.6 version and according to 
+        # the new red hat article - https://access.redhat.com/articles/7042033
+        # the Podman auth configuration locations are preferred over Docker configuration locations.
+
+        # In order to avoid the "unauthorized: authentication required error" and 
+        # make github actions job run successfully make sure when we try to login to openshift registry 
+        # we need to define the oc registry login --to="${HOME}/.docker/config.json" in the oc login action step. 
+
+        # This was not an issue when Openshift pipeline was running on 14.2 or 14.3 version 
+        # but since Openshift upgraded to 14.4 version it started giving warning 
+        # message : the default reading order of registry auth file will be changed from "${HOME}/.docker/config.json" 
+        # to podman registry config locations in the future version of oc. 
+        # "${HOME}/.docker/config.json" is deprecated, but can still be used for storing credentials 
+        # as a fallback. See https://github.com/containers/image/blob/main/docs/containers-auth.json.5.md for the order 
+        # of podman registry config locations.
+        oc registry login --to="${HOME}/.docker/config.json"
+
+    - name: Tag the image in the GHCR as ${{ inputs.environment }}
+      shell: bash
+      run: |
+        docker pull ${{ inputs.github_image_name }}@${{ inputs.image_digest }}
+        docker tag ${{ inputs.github_image_name }}@${{ inputs.image_digest }} ${{ inputs.github_image_name }}:${{ inputs.environment }}
+        docker push ${{ inputs.github_image_name }}:${{ inputs.environment }}
+
+    - name: Tag the image in the OpenShift container registry as ${{ inputs.environment }}
+      shell: bash
+      run: |
+        docker pull ${{ inputs.github_image_name }}@${{ inputs.image_digest }}
+        docker tag ${{ inputs.github_image_name }}@${{ inputs.image_digest }} ${{ inputs.openshift_image_name }}:${{ inputs.environment }}
+        docker push ${{ inputs.openshift_image_name}}:${{ inputs.environment }}
+
+    - name: Trigger OpenShift rollout
+      shell: bash
+      run: |
+        echo starting rollout in ${{ inputs.namespace }}
+        oc -n ${{ inputs.namespace }} rollout status dc/${{ inputs.deployment_configuration }} --watch
+
+    - name: Rocket.Chat Notification
+      uses: RocketChat/[email protected]
+      if: always()
+      with:
+        type:  ${{ job.status }}
+        job_name: '*Deployment to ${{ inputs.environment }}*'
+        mention: 'here'
+        mention_if: 'failure'
+        channel: '#ditp-gha-notifications'
+        url: ${{ inputs.rocketchat_webhook }}
+        commit: true