35 lines
1.6 KiB
Docker
35 lines
1.6 KiB
Docker
# syntax=docker/dockerfile:1
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# Multi-stage: Debian build (Node; Chromium deps for Mermaid land in M3) →
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# pinned nginx-unprivileged runtime serving the static dist/.
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# ---- build stage ----------------------------------------------------------
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# Digest-pinned (was a floating tag → the docker.io re-resolve was the CI "build hang"). With the bastion
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# runner pointed at the zot pull-through mirror, this exact layer is fetched once and cached. Bump the digest
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# when intentionally moving Node. node:22-bookworm-slim index digest resolved 2026-06-23.
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FROM node:22-bookworm-slim@sha256:d9f850096136edbc402debdd8729579a288aac64574ada0ff4db26b6ae58b0b2 AS build
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WORKDIR /app
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# Install deps from the lockfile only first (better layer caching).
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COPY package.json package-lock.json ./
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RUN npm ci
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# Build the static site. The git sha arrives as a build-arg (.dockerignore excludes .git,
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# so an in-container `git rev-parse` can never resolve — the footer receipt read "HEAD unknown").
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ARG GIT_SHA
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ENV GIT_SHA=${GIT_SHA}
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COPY . .
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RUN npm run build
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# ---- runtime stage --------------------------------------------------------
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# Same vetted digest used by the k8s Deployment. Renovate keeps it current.
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FROM ghcr.io/nginx/nginx-unprivileged:1.28.0-alpine@sha256:c97ff0bf7cbae369953c6da1232ec14ad9f971d66360c5698db0856a4cd657a0
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# Custom server config (security headers, caching, routing) + shared headers include.
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COPY nginx/default.conf /etc/nginx/conf.d/default.conf
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COPY nginx/security-headers.conf /etc/nginx/security-headers.conf
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# The built site.
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COPY --from=build /app/dist /usr/share/nginx/html
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EXPOSE 8080
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