feat(deploy): docker compose + nginx static for netcup VPS

.dockerignore

@@ -0,0 +1,15 @@
+node_modules
+dist
+coverage
+.env
+.env.*
+!.env.example
+.git
+.github
+.idea
+.vscode
+.direnv
+.wave
+.claude
+.navi
+*.log

.env.example

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+# Build-time secrets for Vite (baked into static bundle).
+# Copy to .env (gitignored). Used by docker compose build via args.
+
+VITE_SUPABASE_URL=https://<your-project>.supabase.co
+VITE_SUPABASE_ANON_KEY=<anon-key>

Dockerfile

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+# Multi-stage: build the Vite static site, then serve via nginx.
+
+# ── Build stage ────────────────────────────────────────────────────────────
+FROM node:20-alpine AS build
+WORKDIR /app
+
+# Install dependencies first (cache layer)
+COPY package.json package-lock.json ./
+RUN npm ci
+
+# Copy source and build
+COPY . .
+
+# Vite picks up VITE_* at build time. Pass via --build-arg.
+ARG VITE_SUPABASE_URL
+ARG VITE_SUPABASE_ANON_KEY
+ENV VITE_SUPABASE_URL=$VITE_SUPABASE_URL
+ENV VITE_SUPABASE_ANON_KEY=$VITE_SUPABASE_ANON_KEY
+
+RUN npm run build
+
+# ── Runtime stage ──────────────────────────────────────────────────────────
+FROM nginx:1.27-alpine
+
+# Static SPA: redirect 404s to index.html so client-side routing works.
+RUN printf 'server {\n\
+    listen 80;\n\
+    server_name _;\n\
+    root /usr/share/nginx/html;\n\
+    index index.html;\n\
+    location / {\n\
+        try_files $uri $uri/ /index.html;\n\
+    }\n\
+    location /health {\n\
+        access_log off;\n\
+        return 200 "ok\\n";\n\
+        add_header Content-Type text/plain;\n\
+    }\n\
+}\n' > /etc/nginx/conf.d/default.conf
+
+COPY --from=build /app/dist /usr/share/nginx/html
+
+EXPOSE 80
+HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
+    CMD wget -qO- http://127.0.0.1/health || exit 1

README.md

@@ -200,21 +200,61 @@ Coverage reports are generated in the `coverage/` directory with detailed HTML r
 
 ## 🚢 Deployment
 
-To build the project for production:
+### Static build
 
 ```bash
 npm run build
 ```
 
-The output will be generated in the `dist/` directory, which can be deployed to any static web server.
+Outputs to `dist/`. Deployable to any static web server.
 
-For GitHub Pages deployment, the configuration is already set up with the base path `/code-crispies/`.
+For GitHub Pages, base path `/code-crispies/` is preconfigured.
 
-Preview the production build locally:
 ```bash
-npm run preview
+npm run preview   # local prod preview
 ```
 
+### Docker (Netcup VPS)
+
+This repo is the deployable unit for `cc.cloud.librete.ch` on the
+Netcup VPS — sibling to `caddy`, `immich`, `mp`, `umami` (see
+`libretech/netcup`). Multi-stage `Dockerfile` builds the static bundle
+and serves it via nginx; `compose.yaml` joins the external `edge`
+network so Caddy reverse-proxies to it.
+
+```sh
+# from a workstation
+git push
+ssh netcup
+cd /srv/cc
+git pull
+docker compose build
+docker compose up -d
+```
+
+#### First-time setup on the server
+
+```sh
+ssh netcup
+git clone ssh://tengo@git.librete.ch:41240/libretech/code-crispies.git /srv/cc
+cd /srv/cc
+cp .env.example .env
+$EDITOR .env   # fill VITE_SUPABASE_URL + VITE_SUPABASE_ANON_KEY
+chmod 600 .env
+docker compose build
+docker compose up -d
+
+# Verify
+docker compose ps
+docker compose exec -T cc wget -qO- http://127.0.0.1/health
+curl -sS https://cc.cloud.librete.ch/   # via caddy
+```
+
+The nginx config inside the image rewrites unknown paths to
+`index.html` so client-side routing keeps working. `VITE_SUPABASE_*`
+are baked into the bundle at `docker compose build`, so a rebuild is
+needed when they change.
+
 ## 🌐 Internationalization
 
 The project supports multiple languages:

compose.yaml

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+name: cc
+
+services:
+  cc:
+    build:
+      context: .
+      args:
+        VITE_SUPABASE_URL: ${VITE_SUPABASE_URL}
+        VITE_SUPABASE_ANON_KEY: ${VITE_SUPABASE_ANON_KEY}
+    image: cc:local
+    restart: always
+    networks:
+      - edge
+    healthcheck:
+      test: ['CMD-SHELL', 'wget -qO- http://127.0.0.1/health || exit 1']
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 10s
+
+networks:
+  edge:
+    external: true