🐬 Added Docker stuff (#138)

* Docker flow

* (Commit so my commit is verified)

---------

Co-authored-by: Xiliourt <admin@xiliourt.ovh>

.github/workflows/docker.yml

@@ -0,0 +1,39 @@
+name: Push Docker Image to ghcr.io
+
+# Run when release is published
+on:
+  release:
+    types: [published]
+  workflow_dispatch: # Allow for manual push so I can test it
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    # Minimum required permissions
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      # Checkout code
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      # Login to ghcr (automatically uses workflow actor and secret)
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Pushes to both :latest and :<versionTag>
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: |
+            ghcr.io/${{ github.repository_owner }}/tiddl:${{ github.event.release.tag_name }}
+            ghcr.io/${{ github.repository_owner }}/tiddl:latest