Create Dockerfile

Dockerfile

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+# ---------- build stage ----------
+FROM node:20-alpine AS builder
+
+# pnpm is the package manager used by Strudel
+RUN corepack enable && npm install -g pnpm  # corepack ships with Node 20 :contentReference[oaicite:0]{index=0}
+
+# native deps needed for sharp and other Astro plugins to compile on Alpine Linux :contentReference[oaicite:1]{index=1}
+RUN apk add --no-cache git python3 make g++
+
+WORKDIR /app
+COPY . .
+
+# deterministic install & build
+RUN pnpm install --frozen-lockfile  # workspace root uses pnpm :contentReference[oaicite:2]{index=2}
+RUN pnpm build                     # produces website/dist (Astro default) :contentReference[oaicite:3]{index=3}
+
+# ---------- runtime stage ----------
+FROM nginx:alpine
+LABEL org.opencontainers.image.source="https://github.com/tidalcycles/strudel"
+
+# copy the static site produced above
+COPY --from=builder /app/website/dist /usr/share/nginx/html
+
+EXPOSE 80
+HEALTHCHECK CMD wget -qO- http://localhost/ || exit 1
+CMD ["nginx","-g","daemon off;"]