60 lines
2.3 KiB
Docker
60 lines
2.3 KiB
Docker
# syntax=docker/dockerfile:1
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#
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# Standalone Nosterm client image.
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#
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# The full SvelteKit source lives alongside this Dockerfile, so the build has no
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# dependency on anything outside this directory. Build context is THIS
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# directory:
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#
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# docker build -t nosterm:latest .
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#
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# The output is a static SPA served by Caddy. All PUBLIC_ build args are baked
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# into the client bundle (they are browser-visible, so never put secrets here).
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#
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# Relays are configured at RUNTIME, not build time: the entrypoint regenerates
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# /config.json from NOSTERM_DEFAULT_RELAYS on startup, so one prebuilt image can
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# be deployed with different relays per environment. PUBLIC_DEFAULT_RELAYS
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# remains a build-time fallback for images run without the runtime var.
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# --- Build stage -----------------------------------------------------------
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FROM node:20-alpine AS build
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WORKDIR /app
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# Install dependencies against a clean lockfile for reproducible builds.
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# Copied separately so the dependency layer caches independently of source.
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COPY package.json package-lock.json .npmrc ./
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RUN npm ci
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# Build the static SPA.
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COPY . ./
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ARG PUBLIC_DEFAULT_RELAYS=""
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ARG PUBLIC_DEFAULT_THEME="nord"
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ARG PUBLIC_DEFAULT_CHANNEL="nosterm"
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ARG PUBLIC_MAX_TERMINAL_ENTRIES="1000"
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ARG PUBLIC_MAX_MESSAGE_LENGTH="2000"
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ARG PUBLIC_MAX_CACHED_MESSAGES_PER_ROOM="500"
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ENV PUBLIC_DEFAULT_RELAYS=$PUBLIC_DEFAULT_RELAYS \
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PUBLIC_DEFAULT_THEME=$PUBLIC_DEFAULT_THEME \
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PUBLIC_DEFAULT_CHANNEL=$PUBLIC_DEFAULT_CHANNEL \
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PUBLIC_MAX_TERMINAL_ENTRIES=$PUBLIC_MAX_TERMINAL_ENTRIES \
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PUBLIC_MAX_MESSAGE_LENGTH=$PUBLIC_MAX_MESSAGE_LENGTH \
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PUBLIC_MAX_CACHED_MESSAGES_PER_ROOM=$PUBLIC_MAX_CACHED_MESSAGES_PER_ROOM
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RUN npm run build
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# --- Runtime stage (Caddy serves the static build) -------------------------
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FROM caddy:2-alpine AS runtime
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COPY Caddyfile /etc/caddy/Caddyfile
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COPY --from=build /app/build /srv
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# Entrypoint regenerates /srv/config.json from NOSTERM_DEFAULT_RELAYS at start.
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COPY docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
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RUN chmod +x /usr/local/bin/docker-entrypoint.sh
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# Liveness check against the served shell.
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HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
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CMD wget -q --spider http://localhost:80/ || exit 1
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EXPOSE 80
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ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
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CMD ["caddy", "run", "--config", "/etc/caddy/Caddyfile", "--adapter", "caddyfile"]
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