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# syntax=docker/dockerfile:1.4
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FROM --platform=$BUILDPLATFORM golang:1.18 AS build
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WORKDIR /compose/hello-docker
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COPY main.go main.go
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RUN CGO_ENABLED=0 go build -o backend main.go
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FROM build as dev-envs
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RUN <<EOF
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apt-get update
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apt-get install -y --no-install-recommends git
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EOF
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RUN <<EOF
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useradd -s /bin/bash -m vscode
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groupadd docker
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usermod -aG docker vscode
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EOF
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# install Docker tools (cli, buildx, compose)
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COPY --from=gloursdocker/docker / /
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CMD ["go", "run", "main.go"]
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FROM scratch
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COPY --from=build /compose/hello-docker/backend /usr/local/bin/backend
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CMD ["/usr/local/bin/backend"]
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