add sem var to docker image workflow

.github/workflows/docker-image.yml

@@ -1,12 +1,17 @@
 name: Build, Publish and Deploy to Gamma
-on: [workflow_dispatch]
+on:
+  push:
+    tags:
+      - "infisical/v*.*.*"
 
 jobs:
   backend-image:
     name: Build backend image
     runs-on: ubuntu-latest
-
     steps:
+      - name: Extract version from tag
+        id: extract_version
+        run: echo "::set-output name=version::${GITHUB_REF_NAME#infisical/}"
       - name: ☁️ Checkout source
         uses: actions/checkout@v3
       - name: 📦 Install dependencies to test all dependencies
@@ -51,15 +56,19 @@ jobs:
           token: ${{ secrets.DEPOT_PROJECT_TOKEN }}
           push: true
           context: backend
-          tags: infisical/backend:${{ steps.commit.outputs.short }},
+          tags: |
+            infisical/backend:${{ steps.commit.outputs.short }}
             infisical/backend:latest
+            infisical/backend:${{ steps.extract_version.outputs.version }}
           platforms: linux/amd64,linux/arm64
 
   frontend-image:
     name: Build frontend image
     runs-on: ubuntu-latest
-
     steps:
+      - name: Extract version from tag
+        id: extract_version
+        run: echo "::set-output name=version::${GITHUB_REF_NAME#infisical/}"
       - name: ☁️ Checkout source
         uses: actions/checkout@v3
       - name: Save commit hashes for tag
@@ -100,8 +109,10 @@ jobs:
           push: true
           token: ${{ secrets.DEPOT_PROJECT_TOKEN }}
           context: frontend
-          tags: infisical/frontend:${{ steps.commit.outputs.short }},
+          tags: |
+            infisical/frontend:${{ steps.commit.outputs.short }}
             infisical/frontend:latest
+            infisical/frontend:${{ steps.extract_version.outputs.version }}
           platforms: linux/amd64,linux/arm64
           build-args: |
             POSTHOG_API_KEY=${{ secrets.PUBLIC_POSTHOG_API_KEY }}