chore: update docker image to php 8.4

.env

@@ -1,5 +1,5 @@
 APP_ENV=dev
-APP_DEBUG=0
+APP_DEBUG=1
 APP_SECRET=changeme_replace_with_random_32char_string
 
 # Comma-separated list of allowed hostnames. Leave empty to allow all hosts.

.gitea/workflows/docker-publish.yml

@@ -1,10 +1,10 @@
-# Builds and pushes a multi-arch Docker image to the Gitea container registry
-# whenever a semver tag (v*.*.*) is pushed.
+# Builds and pushes a multi-arch Docker image to the Gitea container registry.
+# Triggered manually via workflow_dispatch — enter an existing semver tag (e.g. 1.2.3)
+# in the "Release tag" input. The workflow will fail early if the tag does not exist.
 #
-# One-time setup required:
-#   1. Create a Gitea token with "package:write" scope.
-#   2. Add it as a repository secret named GITEA_TOKEN
-#      (Repository → Settings → Secrets → Actions).
+# Requires a repository secret REGISTRY_TOKEN — a Gitea PAT with write:package scope.
+# Create it at: Settings → Applications → Generate Token (scope: write:package)
+# Then add it: Repository → Settings → Secrets → Actions → REGISTRY_TOKEN
 #
 # After a successful run the image is available at:
 #   <your-gitea-host>/<owner>/<repo>:<version>
@@ -12,17 +12,33 @@
 name: Docker Publish
 
 on:
-  push:
-    tags:
-      - 'v*.*.*'
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Release tag (semver, e.g. 1.2.3)'
+        required: true
+        type: string
 
 jobs:
   build-push:
     runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
 
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Validate tag exists
+        run: |
+          if ! git rev-parse "refs/tags/${{ inputs.tag }}" >/dev/null 2>&1; then
+            echo "Error: tag '${{ inputs.tag }}' does not exist in this repository."
+            exit 1
+          fi
+          git checkout "refs/tags/${{ inputs.tag }}"
 
       # Strip the protocol from the server URL to get the registry hostname.
       # e.g. https://gitea.example.com → gitea.example.com
@@ -30,17 +46,19 @@ jobs:
         run: |
           echo "REGISTRY=$(echo '${{ gitea.server_url }}' | sed 's|https://||;s|http://||')" >> $GITHUB_ENV
 
-      # Generates OCI-compliant tags and labels from the git tag.
-      # v1.2.3 → image tags: 1.2.3 / 1.2 / 1
+      # Generates OCI-compliant tags and labels from the provided release tag.
+      # 1.2.3 → image tags: 1.2.3 / 1.2 / 1
       - name: Extract Docker metadata
         id: meta
         uses: docker/metadata-action@v5
         with:
           images: ${{ env.REGISTRY }}/${{ gitea.repository }}
           tags: |
-            type=semver,pattern={{version}}
-            type=semver,pattern={{major}}.{{minor}}
-            type=semver,pattern={{major}}
+            type=semver,pattern={{version}},value=${{ inputs.tag }}
+            type=semver,pattern={{major}}.{{minor}},value=${{ inputs.tag }}
+            type=semver,pattern={{major}},value=${{ inputs.tag }}
+          labels: |
+            org.opencontainers.image.source=${{ gitea.server_url }}/${{ gitea.repository }}
 
       # QEMU enables emulation of arm64 on the amd64 runner.
       - name: Set up QEMU
@@ -55,7 +73,7 @@ jobs:
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ gitea.actor }}
-          password: ${{ secrets.GITEA_TOKEN }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
 
       - name: Build and push
         uses: docker/build-push-action@v5

CLAUDE.md

@@ -117,6 +117,24 @@ Add to `.claude/settings.json` to run PHPUnit automatically after every file edi
 }
 ```
 
+## Gitea Workflows
+
+Workflow files live in [.gitea/workflows/](.gitea/workflows/). This project uses Gitea Actions (GitHub Actions-compatible syntax).
+
+**When editing workflow files:**
+
+- Use `gitea.*` context variables, not `github.*` — e.g. `${{ gitea.server_url }}`, `${{ gitea.actor }}`, `${{ gitea.repository }}`
+- `GITHUB_ENV` and `GITHUB_OUTPUT` are still the correct env file names (Gitea Actions re-uses these)
+- Secrets are set under Repository → Settings → Secrets → Actions
+- The registry hostname must be derived from `gitea.server_url` (strip the protocol prefix)
+- Triggers use standard `on:` syntax; `tags: '*.*.*'` matches semver pushes without a `v` prefix
+
+**Current workflows:**
+
+| File | Trigger | Purpose |
+|---|---|---|
+| `docker-publish.yml` | Push tag `*.*.*` | Build & push multi-arch image to Gitea container registry |
+
 ## Docker
 
 ### Development

Dockerfile

@@ -1,4 +1,4 @@
-FROM php:8.3-cli-alpine AS base
+FROM php:8.4-cli-alpine3.21 AS base
 
 RUN apk add --no-cache \
     curl \

README.md

@@ -6,7 +6,7 @@ A self-hosted Symfony service that merges contribution data from **GitHub**, **G
 https://your-host/graph.svg?theme=dark
 ```
 
-![Example graph](https://gitgraph.arthurerlich/graph.svg)
+![Example graph](https://gitgraph.arthurerlich.de/graph.svg)
 
 ---