go plugin compiler, Alpine-based

alpine.Dockerfile

FROM golang:1.13.4-alpine
LABEL maintainer="Kong Core Team <team-core@konghq.com>"

RUN apk update && \
	apk upgrade && \
	apk add git \
		bash \
		gcc \
		musl-dev \
		openssl \
		go

RUN go get github.com/Kong/go-pluginserver

VOLUME /plugins
WORKDIR /plugins

RUN (echo '#!/bin/sh' && echo 'cp /go/bin/go-pluginserver /plugins') >> /usr/local/bin/get-server
RUN (echo '#!/bin/sh' && echo 'go build -buildmode=plugin "$@"') >> /usr/local/bin/build
RUN chmod a+x /usr/local/bin/*

# to copy go-pluginserver to current directory:
#    docker run -it --rm -v `pwd`:/plugins gokit get-server
#
# to compile a plugin:
#    docker run -it --rm -v `pwd`:/plugins gokit build go-log.go