H1K0
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The `# syntax=docker/dockerfile:1` line made BuildKit fetch its frontend image from Docker Hub on every build, even when all base images and layers were already cached. On a host that briefly can't resolve registry-1.docker.io this is the first and only mandatory network round-trip, so the build fails at "resolve image config for docker-image://docker.io/docker/dockerfile:1" before any stage runs. This Dockerfile uses no frontend-specific syntax (no heredocs, no RUN --mount, no COPY --link) — only multi-stage, COPY --from/--chown, RUN, ENV, etc., all handled by the engine's built-in frontend. Dropping the directive removes the Docker Hub dependency and lets a fully cached build complete offline. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
92 lines
3.8 KiB
Docker
92 lines
3.8 KiB
Docker
# =============================================================================
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# Tanabata File Manager — single-image build
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#
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# Produces one container that serves the SvelteKit SPA (built to static files)
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# and the Go API on the same port. There is no Node runtime in the final image:
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# the frontend uses adapter-static, so stage 1 emits plain HTML/CSS/JS that the
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# Go binary serves directly (see STATIC_DIR).
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# =============================================================================
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# -----------------------------------------------------------------------------
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# Stage 1 — build the frontend (static SPA)
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# -----------------------------------------------------------------------------
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FROM node:22-alpine AS frontend
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WORKDIR /src/frontend
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# Install dependencies first so this layer is cached unless the lockfile changes.
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COPY frontend/package.json frontend/package-lock.json ./
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RUN npm ci
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# `npm run build` runs `generate:types`, which reads ../openapi.yaml relative to
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# the frontend directory — place the spec one level up to match the repo layout.
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COPY openapi.yaml /src/openapi.yaml
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COPY frontend/ ./
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RUN npm run build
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# Output: /src/frontend/build (index.html, _app/, fonts, service-worker.js, …)
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# -----------------------------------------------------------------------------
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# Stage 2 — build the Go server (static binary)
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# -----------------------------------------------------------------------------
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FROM golang:1.26-alpine AS backend
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WORKDIR /src/backend
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# Download modules first so this layer is cached unless go.mod/go.sum changes.
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COPY backend/go.mod backend/go.sum ./
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RUN go mod download
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COPY backend/ ./
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# CGO is disabled: the binary shells out to external tools at runtime
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# (vipsthumbnail for image thumbnails, ffmpeg for video frames, exiftool for
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# metadata) and falls back to pure-Go image processing (disintegration/imaging)
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# when vips is absent, so it stays fully static and portable across base images.
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RUN CGO_ENABLED=0 GOOS=linux go build -trimpath -ldflags="-s -w" -o /out/server ./cmd/server
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# -----------------------------------------------------------------------------
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# Stage 3 — minimal runtime
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#
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# Alpine (not distroless/scratch) because thumbnailing and metadata extraction
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# invoke external processes (vipsthumbnail, ffmpeg, exiftool) that must be present
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# on the runtime image.
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# -----------------------------------------------------------------------------
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FROM alpine:3.21 AS runtime
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# vips-tools: fast, low-memory image thumbnails (shrink-on-load, so multi-hundred-
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# Mpx photos cost little). ffmpeg: video frame extraction. exiftool: rich metadata.
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# ca-certificates/tzdata: TLS + time zones.
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RUN apk add --no-cache vips-tools ffmpeg exiftool ca-certificates tzdata
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# Run as an unprivileged user.
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RUN addgroup -S -g 42776 tanabata && adduser -S -G tanabata -u 42776 tanabata
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WORKDIR /app
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# The built SPA, served by the Go binary (matches STATIC_DIR below).
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COPY --from=frontend --chown=tanabata:tanabata /src/frontend/build /app/static
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# The server binary.
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COPY --from=backend --chown=tanabata:tanabata /out/server /app/server
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# Data directories (overridable via FILES_PATH/THUMBS_CACHE_PATH/IMPORT_PATH).
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# Created and owned by the tanabata user so a fresh named volume inherits write access.
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RUN mkdir -p /data/files /data/thumbs /data/import && chown -R tanabata:tanabata /data
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# Non-secret defaults mirroring .env.example. Secrets (JWT_SECRET, ADMIN_PASSWORD,
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# DATABASE_URL) are intentionally NOT baked in — pass them at `docker run`.
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ENV LISTEN_ADDR=:42776 \
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STATIC_DIR=/app/static \
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FILES_PATH=/data/files \
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THUMBS_CACHE_PATH=/data/thumbs \
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IMPORT_PATH=/data/import
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EXPOSE 42776
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VOLUME ["/data"]
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USER tanabata
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HEALTHCHECK --interval=30s --timeout=3s --start-period=10s --retries=3 \
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CMD wget -qO- http://127.0.0.1:42776/health >/dev/null 2>&1 || exit 1
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ENTRYPOINT ["/app/server"]
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