68 lines
2.7 KiB
Text
68 lines
2.7 KiB
Text
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# syntax=docker/dockerfile:1
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#
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# Release image, built by GoReleaser.
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#
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# This exists alongside the main `Dockerfile` rather than replacing it, because the
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# two answer different questions:
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#
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# * `Dockerfile` builds the frontend, the SDK and the binary from source, so that
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# `docker build .` always produces something runnable from a clean checkout.
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# * `Dockerfile.release` consumes a binary GoReleaser has already cross-compiled,
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# so a release never rebuilds the Go code a second time with different flags
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# from the one that was checksummed, signed and published.
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#
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# The runtime layer is identical to the main Dockerfile's, so a release image and a
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# locally built image differ only in provenance, never in behaviour.
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#
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# GoReleaser assembles the build context with the compiled binary at
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# `go-bananas_linux_{arch}/go-bananas`, and `extra_files` supplies the frontend and
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# SDK bundles. Nothing here compiles anything.
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ARG ALPINE_VERSION=3.22
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FROM alpine:${ALPINE_VERSION}
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ARG VERSION=dev
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ARG TARGETARCH=amd64
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# curl is present only for the container health check; busybox wget would do, but
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# curl's exit codes are the ones the check reasons about. tzdata is needed because
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# timestamps are rendered in the configured locale.
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RUN apk add --no-cache ca-certificates tzdata curl \
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&& addgroup -g 65532 -S bananas \
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&& adduser -u 65532 -S -G bananas -H -s /sbin/nologin bananas
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# The build context is generated, so these paths are relative to it rather than to
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# the repository root. TARGETARCH is the Go arch name and matches the directory
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# GoReleaser wrote the binary into.
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COPY go-bananas_linux_${TARGETARCH}/go-bananas /usr/local/bin/go-bananas
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COPY web/dist /srv/web
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COPY sdk/dist /srv/sdk
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RUN chmod 0755 /usr/local/bin/go-bananas \
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&& mkdir -p /srv/data \
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&& chown -R bananas:bananas /srv
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USER 65532:65532
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WORKDIR /srv
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ENV BANANAS_HTTP_ADDR=:8080 \
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BANANAS_STATIC_DIR=/srv/web \
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BANANAS_SDK_DIR=/srv/sdk \
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BANANAS_DATABASE_PATH=/srv/data/go-bananas.db \
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BANANAS_LOG_FORMAT=json
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EXPOSE 8080
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VOLUME ["/srv/data"]
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HEALTHCHECK --interval=30s --timeout=3s --start-period=10s --retries=3 \
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CMD curl --fail --silent --show-error http://127.0.0.1:8080/healthz || exit 1
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LABEL org.opencontainers.image.title="go-bananas" \
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org.opencontainers.image.description="Runtime design-token service: author themes, serve them to any application at run time." \
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org.opencontainers.image.version="${VERSION}" \
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org.opencontainers.image.source="https://github.com/urpi/go-bananas" \
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org.opencontainers.image.licenses="MIT" \
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org.opencontainers.image.base.name="docker.io/library/alpine:3.22"
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ENTRYPOINT ["/usr/local/bin/go-bananas"]
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