Dockerfile

# This Dockerfile utilizes a multi-stage builds
ARG ALPINE_VERSION=3.19

FROM golang:1.20-alpine$ALPINE_VERSION AS builder

ARG TARGETARCH
ARG TARGETOS

# Install necessary build tools
RUN apk --update add make bash curl git

# Switch workdir, otherwise we end up in /go (default)
WORKDIR /

# Copy everything into build container
COPY . .

# Build the application
RUN make build/$TARGETOS-$TARGETARCH

# Now in 2nd build stage
FROM library/alpine:$ALPINE_VERSION

ARG TARGETARCH
ARG TARGETOS

# Necessary depedencies
RUN apk --update add bash curl ca-certificates && update-ca-certificates

# Install binary
COPY --from=builder /build/plumber-$TARGETOS-$TARGETARCH /plumber-linux
COPY --from=builder /docker-entrypoint.sh /docker-entrypoint.sh
RUN ln -s /plumber-linux /usr/bin/plumber

ENTRYPOINT ["/docker-entrypoint.sh"]

CMD ["/plumber-linux", "server"]