docs: add container registry instructions to README

.github/workflows/publish.yml

@@ -0,0 +1,53 @@
+name: Publish Docker Image
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*'
+
+jobs:
+  publish:
+    name: Publish Docker Image
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/${{ github.repository }}
+          tags: |
+            type=ref,event=branch
+            type=ref,event=tag
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=sha,prefix=
+            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

README.md

@@ -59,12 +59,33 @@ Open `.env`, define your own strong `API_KEY`, and map the ports (optional)
 #### Option A: Docker Compose (Recommended)
 The easiest way to get up and running. This spins up both toknd and a dedicated Redis instance.
 
-- **Production**:
-  ```bash
-  docker compose up -d --build
-  (or)
-  podman compose up -d --build
-  ```
+You can run toknd by building the container locally or by pulling the pre-built image from the **GitHub Container Registry (GHCR)**.
+
+##### Using Pre-built Image (GHCR)
+Instead of building locally, you can pull the pre-built image. Update the `app` service in `docker-compose.yml` to pull the image:
+
+```yaml
+services:
+  app:
+    image: ghcr.io/ramvignesh-b/toknd:latest
+    # build: .  # Comment or remove this line
+```
+
+Then start the services:
+```bash
+docker compose up -d
+(or)
+podman compose up -d
+```
+
+##### Building from Source
+If you prefer to build the image locally:
+```bash
+docker compose up -d --build
+(or)
+podman compose up -d --build
+```
+
 
 
 #### Option B: Bare Metal