Dockerfile

FROM alpine
CMD ["/bin/sh"]
RUN apk add --no-cache ca-certificates
RUN  ! -e /etc/nsswitch.conf  && echo 'hosts: files dns' > /etc/nsswitch.conf
ENV PATH=/usr/local/go/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
ENV GOLANG_VERSION=1.18
RUN set -eux; 	apk add --no-cache --virtual .fetch-deps ; 	arch="$(apk --print-arch)"; 	url=; 	case "$arch" in 		'x86_64') 			export GOARCH='amd64' GOOS='linux'; 			;; 		'armhf') 			export GOARCH='arm' GOARM='6' GOOS='linux'; 			;; 		'armv7') 			export GOARCH='arm' GOARM='7' GOOS='linux'; 			;; 		'aarch64') 			export GOARCH='arm64' GOOS='linux'; 			;; 		'x86') 			export GO386='softfloat' GOARCH='386' GOOS='linux'; 			;; 		'ppc64le') 			export GOARCH='ppc64le' GOOS='linux'; 			;; 		's390x') 			export GOARCH='s390x' GOOS='linux'; 			;; 		*) echo >&2 "error: unsupported architecture '$arch' (likely packaging update needed)"; exit 1 ;; 	esac; 	build=; 	if [ -z "$url" ]; then 		build=1; 		url='https://dl.google.com/go/go1.18.src.tar.gz'  sha256="38f423db4cc834883f2b52344282fa7a39fbb93650dc62a11fdf0be6409bdad6"; 	fi;  	wget -O go.tgz "$url"; 	echo "$sha256 *go.tgz" | sha256sum -c -;	tar -C /usr/local -xzf go.tgz; 	rm go.tgz; 		if [ -n "$build" ]; then 		apk add --no-cache --virtual .build-deps 			bash 			gcc 			go 			musl-dev 		; 				( 			cd /usr/local/go/src; 			export GOROOT_BOOTSTRAP="$(go env GOROOT)" GOHOSTOS="$GOOS" GOHOSTARCH="$GOARCH"; 			./make.bash; 		); 				apk del --no-network .build-deps; 				rm -rf 			/usr/local/go/pkg/*/cmd 			/usr/local/go/pkg/bootstrap 			/usr/local/go/pkg/obj 			/usr/local/go/pkg/tool/*/api 			/usr/local/go/pkg/tool/*/go_bootstrap 			/usr/local/go/src/cmd/dist/dist 		; 	fi; 		apk del --no-network .fetch-deps; 		go version
ENV GOPATH=/go
ENV PATH=/go/bin:/usr/local/go/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
RUN mkdir -p "$GOPATH/src" "$GOPATH/bin" && chmod -R 777 "$GOPATH"
WORKDIR /go
RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime &&  echo 'Asia/Shanghai' >/etc/timezone
ENV GO111MODULE=on
ENV GOPROXY=https://goproxy.cn,direct
RUN go install github.com/cortesi/modd/cmd/modd@latest
CMD ["modd"]