ci(github-actions): only push image on tags and releases

.github/workflows/deploy_image.yml

@@ -2,11 +2,8 @@ name: Deploy Morphos Server Container Image
 
 on:
   push:
-    branches:
-      - main
-
-env:
-  GO_VERSION: 1.21.5
+    tags:
+      - '[0-9]+.[0-9]+.[0-9]+' # Only build on tag with semantic versioning format
 
 jobs:
   push_morphos_image:
@@ -18,6 +15,8 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Set up QEMU
+      - name: Set release tag env variable
+        run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -33,4 +32,4 @@ jobs:
           context: .
           platforms: linux/amd64,linux/arm64
           push: true
-          tags: ghcr.io/${{ github.actor }}/morphos-server:latest
+          tags: ghcr.io/${{ github.actor }}/morphos-server:latest, ghcr.io/${{ github.actor }}/morphos-server:${{ env.RELEASE_VERSION }}