50 lines
1.9 KiB
Docker
50 lines
1.9 KiB
Docker
# syntax=docker/dockerfile:1
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# decla.red game server (the `declared-server` package).
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# The frontend is a static site and is NOT built here — see .forgejo/workflows.
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# ---- Stage 1: build the shared lib, then bundle the server -------------------
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# Node 14 matches the project toolchain (webpack 4 / TypeScript 4, see
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# .devcontainer). The full (non-slim) image carries the build tools that
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# socket.io's optional native deps (bufferutil/utf-8-validate) compile against.
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FROM node:14-bullseye AS build
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WORKDIR /app
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# `shared` is consumed by the backend as `file:../shared` and is bundled into
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# the server bundle by webpack, so it must be installed and built first.
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COPY shared/package.json shared/
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RUN cd shared && npm install
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COPY shared/ shared/
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RUN cd shared && npm run build
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# Install the backend deps. `file:../shared` now resolves to the built /app/shared.
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COPY backend/package.json backend/
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RUN cd backend && npm install
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COPY backend/ backend/
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RUN cd backend && npm run build
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# Drop devDependencies; the runtime only needs the production deps that webpack
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# left external (express, socket.io, cors, gl-matrix, minimist, msgpack parser).
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RUN cd backend && npm prune --production
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# ---- Stage 2: minimal runtime ----------------------------------------------
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FROM node:14-bullseye-slim
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WORKDIR /app
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ENV NODE_ENV=production
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# Run as an unprivileged user.
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RUN groupadd -r app && useradd -r -g app -d /app app
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COPY --from=build /app/backend/dist ./dist
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COPY --from=build /app/backend/node_modules ./node_modules
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USER app
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EXPOSE 3000
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# Hits the same /state endpoint the website polls (see serverInformationEndpoint).
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HEALTHCHECK --interval=30s --timeout=5s --start-period=15s --retries=3 \
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CMD node -e "require('http').get('http://localhost:3000/state',r=>process.exit(r.statusCode===200?0:1)).on('error',()=>process.exit(1))"
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ENTRYPOINT ["node", "dist/main.js"]
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# Override these to tune the server, e.g. `--name`, `--playerLimit`, `--worldSize`.
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CMD ["--port", "3000"]
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