Rename docker workflow to image and update labels

Renamed the workflow file from docker.yml to image.yml and updated workflow and step names to use 'Image' instead of 'Docker'. This improves clarity and generalizes the workflow for building and pushing images.

.github/workflows/image.yml

@@ -1,4 +1,4 @@
-name: Build and Push Docker Image to GHCR
+name: Build and Push Image
 
 on:
   push:
@@ -56,7 +56,7 @@ jobs:
             type=sha,prefix={{branch}}-
             type=raw,value=latest,enable={{is_default_branch}}
 
-      - name: Build and push Docker image
+      - name: Build and push image
         id: build-and-push
         uses: docker/build-push-action@v5
         with: