ci: use unique image tags, add kubectl setup

.gitea/workflows/deploy.yml

@@ -21,11 +21,23 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Build Docker image
+      - name: Build & Push Docker image
         run: |
-          docker build -t $REGISTRY/$APP:${{ inputs.environment }} .
+          TAG=${{ github.sha }}
+          docker build -t $REGISTRY/$APP:$TAG -t $REGISTRY/$APP:${{ inputs.environment }} .
+          docker push $REGISTRY/$APP:$TAG
           docker push $REGISTRY/$APP:${{ inputs.environment }}
 
+      - name: Setup kubectl
+        run: |
+          curl -sLO "https://dl.k8s.io/release/v1.36.0/bin/linux/amd64/kubectl"
+          chmod +x kubectl
+          mv kubectl /usr/local/bin/
+          mkdir -p ~/.kube
+          echo "${{ secrets.KUBECONFIG_B64 }}" | base64 -d > ~/.kube/config
+
       - name: Deploy to K8s
         run: |
-          kubectl rollout restart deployment/$APP -n lpt-${{ inputs.environment }}
+          TAG=${{ github.sha }}
+          kubectl set image deployment/$APP $APP=$REGISTRY/$APP:$TAG -n lpt-${{ inputs.environment }}
+          kubectl rollout status deployment/$APP -n lpt-${{ inputs.environment }}