45 lines
1.4 KiB
Docker
45 lines
1.4 KiB
Docker
# syntax=docker/dockerfile:1.7
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########################
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# builder
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########################
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FROM --platform=$BUILDPLATFORM golang:1.22-bookworm AS build
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ARG TARGETOS
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ARG TARGETARCH
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ARG TARGETVARIANT
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WORKDIR /src
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# 1) Copy ONLY go.mod first and materialize go.sum inside the image
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COPY go.mod ./
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# Produce go.sum (and module cache) before copying the rest
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RUN --mount=type=cache,target=/root/.cache/go-build \
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go mod download && go mod verify
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# 2) Now copy the rest of the source
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COPY . .
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# (Optional but nice) ensure module graph is tidy (updates go.sum if needed)
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RUN --mount=type=cache,target=/root/.cache/go-build \
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go mod tidy
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# 3) Build (with ARM variant handling)
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ENV CGO_ENABLED=0
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RUN --mount=type=cache,target=/root/.cache/go-build \
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if [ "${TARGETARCH}${TARGETVARIANT}" = "armv6" ]; then export GOARM=6; fi && \
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if [ "${TARGETARCH}${TARGETVARIANT}" = "armv7" ]; then export GOARM=7; fi && \
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GOOS=$TARGETOS GOARCH=$TARGETARCH go build -trimpath -ldflags="-s -w" \
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-o /out/greencoast-shard ./cmd/shard
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########################
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# runtime
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########################
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FROM gcr.io/distroless/base-debian12:nonroot
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WORKDIR /app
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COPY --from=build /out/greencoast-shard /app/greencoast-shard
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COPY configs/shard.sample.yaml /app/shard.yaml
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VOLUME ["/var/lib/greencoast"]
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EXPOSE 8080 8081
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USER nonroot:nonroot
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ENTRYPOINT ["/app/greencoast-shard","--config","/app/shard.yaml"]
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