refactor: switch from Docker Hub to GitHub Container Registry (ghcr.io)

- Use ghcr.io/selfpatch/sovd_web_ui as image name
- Authenticate with GITHUB_TOKEN (no extra secrets needed)
- packages:write permission required for GHCR
- Update README with GHCR badge and pull instructions

Author: bburda

.github/workflows/docker-publish.yml

@@ -11,13 +11,15 @@ on:
       - 'v*'
 
 env:
-  IMAGE_NAME: bburda/sovd_web_ui
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
 
 jobs:
   build-and-push:
     runs-on: ubuntu-latest
     permissions:
       contents: read
+      packages: write
 
     steps:
       - name: Checkout repository
@@ -26,18 +28,19 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-      - name: Log in to Docker Hub
+      - name: Log in to GitHub Container Registry
         if: github.event_name != 'pull_request'
         uses: docker/login-action@v3
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Extract metadata (tags, labels)
         id: meta
         uses: docker/metadata-action@v5
         with:
-          images: ${{ env.IMAGE_NAME }}
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
             # latest on main branch
             type=raw,value=latest,enable={{is_default_branch}}

README.md

@@ -1,7 +1,7 @@
 # sovd_web_ui
 
 [![CI](https://github.com/selfpatch/sovd_web_ui/actions/workflows/ci.yml/badge.svg)](https://github.com/selfpatch/sovd_web_ui/actions/workflows/ci.yml)
-[![Docker Hub](https://img.shields.io/docker/v/bburda/sovd_web_ui?label=Docker%20Hub&logo=docker)](https://hub.docker.com/r/bburda/sovd_web_ui)
+[![GHCR](https://img.shields.io/badge/GHCR-ghcr.io%2Fselfpatch%2Fsovd__web__ui-blue?logo=github)](https://github.com/selfpatch/sovd_web_ui/pkgs/container/sovd_web_ui)
 
 Simple, open-source web UI for browsing SOVD (Service-Oriented Vehicle Diagnostics) entity trees via discovery endpoints.
 
@@ -34,9 +34,9 @@ This tool is designed for developers and integrators working with SOVD-compatibl
 ### Using Docker
 
 ```bash
-# Pull from Docker Hub
-docker pull bburda/sovd_web_ui:latest
-docker run -p 8080:80 bburda/sovd_web_ui:latest
+# Pull from GitHub Container Registry
+docker pull ghcr.io/selfpatch/sovd_web_ui:latest
+docker run -p 8080:80 ghcr.io/selfpatch/sovd_web_ui:latest
 
 # Or build locally
 docker build -t sovd_web_ui .
@@ -47,7 +47,7 @@ Then open http://localhost:8080 in your browser.
 
 #### Docker Image Tags
 
-Docker images are automatically published to Docker Hub via GitHub Actions:
+Docker images are automatically published to GitHub Container Registry via GitHub Actions:
 
 | Trigger | Image Tags |
 |---------|------------|