Update Docker image workflow for GHCR

Normalized the image name to lowercase and updated Docker commands to use the GitHub Container Registry.

Author: Aavtic

.github/workflows/docker-image.yml

@@ -7,7 +7,6 @@ on:
 
 env:
   REGISTRY: ghcr.io
-  IMAGE_NAME: ${{ github.repository }}
 
 jobs:
   build:
@@ -21,21 +20,25 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Login to GHCR
+      - name: Normalize image name (lowercase)
+        run: |
+          echo "IMAGE_NAME=${GITHUB_REPOSITORY,,}" >> $GITHUB_ENV
+
+      - name: Login to GitHub Container Registry
         run: |
           echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io \
             -u "${{ github.actor }}" \
             --password-stdin
 
-      - name: Build Docker image (manual)
+      - name: Build Docker image
         run: |
           docker build \
             -f backend/Dockerfile \
-            -t aavtic/$IMAGE_NAME:latest \
-            -t aavtic/$IMAGE_NAME:${{ github.sha }} \
+            -t $REGISTRY/$IMAGE_NAME:latest \
+            -t $REGISTRY/$IMAGE_NAME:${{ github.sha }} \
             backend
 
       - name: Push Docker image
         run: |
-          docker push aavtic/$IMAGE_NAME:latest
-          docker push aavtic/$IMAGE_NAME:${{ github.sha }}
+          docker push $REGISTRY/$IMAGE_NAME:latest
+          docker push $REGISTRY/$IMAGE_NAME:${{ github.sha }}