Initial commit

Author: pieterjvt

.github/workflows/docker.yaml

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+name: Build Docker image
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - "v*.*.*"
+
+  pull_request:
+    branches:
+      - main
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+  # Optional repository variable:
+  # CADDY_IMAGE=ghcr.io/ludero-git/caddy:2.10.2
+  #
+  # Falls back to caddy:latest when the variable is not configured.
+  CADDY_IMAGE: ${{ vars.CADDY_IMAGE || 'caddy:latest' }}
+
+jobs:
+  docker:
+    name: Build Docker image
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v7
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v4
+
+      - name: Log in to GHCR
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v4
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v6
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            # main branch -> latest
+            type=raw,value=latest,enable={{is_default_branch}}
+
+            # Every build -> sha-a1b2c3d
+            type=sha,prefix=sha-
+
+            # v1.2.3 -> 1.2.3
+            type=semver,pattern={{version}}
+
+            # v1.2.3 -> 1.2
+            type=semver,pattern={{major}}.{{minor}}
+
+            # v1.2.3 -> 1
+            type=semver,pattern={{major}}
+
+      - name: Build and push Docker image
+        id: build
+        uses: docker/build-push-action@v7
+        with:
+          context: .
+          file: ./Dockerfile
+
+          # PRs are built for validation but are not pushed.
+          push: ${{ github.event_name != 'pull_request' }}
+
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+          # Pass the configurable Caddy image to Dockerfile.
+          build-args: |
+            CADDY_IMAGE=${{ env.CADDY_IMAGE }}
+
+          # Make sure e.g. caddy:latest is refreshed.
+          pull: true
+
+          # GitHub Actions BuildKit cache.
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

Caddyfile

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+:{$PORT:3000} {
+    root * /srv
+
+    route {
+        templates
+
+        # Fallback to index.html.
+        try_files {path} /index.html
+
+        # Avoid caching everything.
+        header {
+            Cache-Control "no-store, no-cache, must-revalidate"
+        }
+
+        # Only index.html returns 503.
+        @index path /index.html
+        file_server @index {
+            status 503
+        }
+
+        # All other files return their normal status.
+        file_server
+    }
+}

Dockerfile

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+ARG CADDY_IMAGE=caddy:latest
+
+FROM ${CADDY_IMAGE}
+
+ENV PORT=3000
+ENV ENDTIME=""
+
+COPY Caddyfile /etc/caddy/Caddyfile
+COPY site /srv

LICENSE

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+MIT License
+
+Copyright (c) 2026 Ludero
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Maintenance Page
+
+Maintenance page for Ludero, served using the Caddy web server.
+
+## Local development
+
+### Build
+
+```sh
+docker build -t ludero-maintenance:local .
+```
+
+Optionally specify the Caddy image:
+
+```sh
+docker build \
+  --build-arg CADDY_IMAGE=caddy:2-alpine \
+  -t ludero-maintenance:local .
+```
+
+### Run
+
+```sh
+docker run --rm \
+  -p 3000:3000 \
+  -e ENDTIME="2026-08-16T18:00:00+02:00" \
+  ludero-maintenance:local
+```
+
+### Docker Compose
+
+See [docker-compose.yaml](/docker-compose.yaml).
+
+## License
+
+[MIT](/LICENSE)

docker-compose.yaml

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+services:
+  maintenance:
+    build: .
+    ports:
+      - "${PORT:-3000}:${PORT:-3000}"
+    environment:
+      PORT: "${PORT:-3000}"
+      ENDTIME: "${ENDTIME}"