48 lines
1018 B
Docker
48 lines
1018 B
Docker
FROM golang:1.19-alpine as builder
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# Install build dependencies
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RUN apk add alpine-sdk
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# Create appuser.
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ENV USER=appuser
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ENV UID=10001
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# See https://stackoverflow.com/a/55757473/12429735
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RUN adduser \
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--disabled-password \
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--gecos "" \
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--home "/nonexistent" \
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--shell "/sbin/nologin" \
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--no-create-home \
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--uid "${UID}" \
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"${USER}"
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# Prepare dependencies
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RUN mkdir /build
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ADD go.mod go.sum /build/
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WORKDIR /build
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RUN go mod download
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RUN go mod verify
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# Prepare app
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ADD server.go /build/
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# Build as static binary
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RUN CGO_ENABLED=1 go build --tags "fts5" -ldflags='-w -s -extldflags "-static"' -o /build/search-server
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# Copy binary to empty image
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FROM scratch
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# Import the user and group files from the builder.
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COPY --from=builder /etc/passwd /etc/passwd
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COPY --from=builder /etc/group /etc/group
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# Prepare environment
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ENV GIN_MODE=release
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# Copy executable
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COPY --from=builder /build/search-server /server
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# Use an unprivileged user.
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USER appuser:appuser
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ENTRYPOINT ["/server"]
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