Refactor build-and-push workflow to install dependencies and retrieve Forge snapshot tag

.gitea/workflows/build-and-push.yaml

@@ -11,20 +11,49 @@ jobs:
       - name: Checkout repo
         uses: actions/checkout@v3
 
-      - name: Install Docker CLI
+      - name: Install Dependencies
         run: |
-          apt-get update && apt-get install -y docker.io
+          sudo apt-get update && sudo apt-get install -y curl jq docker.io
 
-      - name: Set up Docker
+      - name: Get Forge Snapshot Tag
+        id: get_tag
+        run: |
+          SNAPSHOT_URL=$(curl -s https://api.github.com/repos/Card-Forge/forge/releases/tags/daily-snapshots \
+            | jq -r '.assets[] | select(.name | test("forge-installer-.*\\.tar\\.bz2")) | .browser_download_url')
+
+          echo "Snapshot URL: $SNAPSHOT_URL"
+
+          SNAPSHOT_NAME=$(basename "$SNAPSHOT_URL")
+          echo "Snapshot file: $SNAPSHOT_NAME"
+
+          # Extract the "06.11" part from something like: forge-installer-2.0.05-SNAPSHOT-06.11.tar.bz2
+          SNAPSHOT_TAG=$(echo "$SNAPSHOT_NAME" | sed -E 's/.*SNAPSHOT-([0-9]+\.[0-9]+)\.tar\.bz2/\1/')
+
+          echo "Using tag: $SNAPSHOT_TAG"
+          echo "snapshot_tag=$SNAPSHOT_TAG" >> "$GITHUB_OUTPUT"
+
+      - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
 
       - name: Login to Docker Hub
         run: echo "${{ secrets.DOCKERHUB_PASSWORD }}" | docker login -u "${{ secrets.DOCKERHUB_USERNAME }}" --password-stdin
 
-      - name: Build and Push
+      - name: Build and Push Docker Image
         run: |
           IMAGE=forge-kasm
           USERNAME=${{ secrets.DOCKERHUB_USERNAME }}
-          TAG=latest
+          TAG=${{ steps.get_tag.outputs.snapshot_tag }}
+
+          echo "Building and pushing image as: $USERNAME/$IMAGE:$TAG"
+
           docker build -t $USERNAME/$IMAGE:$TAG .
           docker push $USERNAME/$IMAGE:$TAG
+
+      - name: (Optional) Also Push 'latest' Tag
+        run: |
+          IMAGE=forge-kasm
+          USERNAME=${{ secrets.DOCKERHUB_USERNAME }}
+          TAG=${{ steps.get_tag.outputs.snapshot_tag }}
+
+          docker tag $USERNAME/$IMAGE:$TAG $USERNAME/$IMAGE:latest
+          docker push $USERNAME/$IMAGE:latest