go 1.13.4

Dockerfile

@@ -1,16 +1,66 @@
 FROM docker:18-git
 
-ENV GO111MODULE off
+RUN apk add --no-cache \
+		ca-certificates
+
+# set up nsswitch.conf for Go's "netgo" implementation
+# - https://github.com/golang/go/blob/go1.9.1/src/net/conf.go#L194-L275
+# - docker run --rm debian:stretch grep '^hosts:' /etc/nsswitch.conf
+#RUN [ ! -e /etc/nsswitch.conf ] && echo 'hosts: files dns' > /etc/nsswitch.conf
+
+ENV GOLANG_VERSION 1.13.10
+
+RUN set -eux; \
+	apk add --no-cache --virtual .build-deps \
+		bash \
+		gcc \
+		musl-dev \
+		openssl \
+		go \
+	; \
+	export \
+# set GOROOT_BOOTSTRAP such that we can actually build Go
+		GOROOT_BOOTSTRAP="$(go env GOROOT)" \
+# ... and set "cross-building" related vars to the installed system's values so that we create a build targeting the proper arch
+# (for example, if our build host is GOARCH=amd64, but our build env/image is GOARCH=386, our build needs GOARCH=386)
+		GOOS="$(go env GOOS)" \
+		GOARCH="$(go env GOARCH)" \
+		GOHOSTOS="$(go env GOHOSTOS)" \
+		GOHOSTARCH="$(go env GOHOSTARCH)" \
+	; \
+# also explicitly set GO386 and GOARM if appropriate
+# https://github.com/docker-library/golang/issues/184
+	apkArch="$(apk --print-arch)"; \
+	case "$apkArch" in \
+		armhf) export GOARM='6' ;; \
+		armv7) export GOARM='7' ;; \
+		x86) export GO386='387' ;; \
+	esac; \
+	\
+	wget -O go.tgz "https://dl.google.com/go/go$GOLANG_VERSION.src.tar.gz"; \
+	echo 'eb9ccc8bf59ed068e7eff73e154e4f5ee7eec0a47a610fb864e3332a2fdc8b8c *go.tgz' | sha256sum -c -; \
+	tar -C /usr/local -xzf go.tgz; \
+	rm go.tgz; \
+	\
+	cd /usr/local/go/src; \
+	./make.bash; \
+	\
+	rm -rf \
+# https://github.com/golang/go/blob/0b30cf534a03618162d3015c8705dd2231e34703/src/cmd/dist/buildtool.go#L121-L125
+		/usr/local/go/pkg/bootstrap \
+# https://golang.org/cl/82095
+# https://github.com/golang/build/blob/e3fe1605c30f6a3fd136b561569933312ede8782/cmd/release/releaselet.go#L56
+		/usr/local/go/pkg/obj \
+	; \
+	apk del .build-deps; \
+	\
+	export PATH="/usr/local/go/bin:$PATH"; \
+	go version
+
 ENV GOPATH /go
-ENV GOBIN "${GOPATH}/bin"
-ENV PATH "${GOBIN}:${PATH}"
+ENV PATH $GOPATH/bin:/usr/local/go/bin:$PATH
+
+RUN mkdir -p "$GOPATH/src" "$GOPATH/bin" && chmod -R 777 "$GOPATH"
+WORKDIR $GOPATH
 
-RUN apk update && apk add --no-cache go=1.12.12-r0 alpine-sdk bash && apk upgrade && \
-    mkdir -p ${GOBIN} && \
-    mkdir -p ~/.ssh && chmod 0700 ~/.ssh && \
-    curl -s https://glide.sh/get | sh && \
-    curl -s https://raw.githubusercontent.com/golang/dep/master/install.sh | sh && \
-    go get github.com/huanteng/pgdiff && \
-    go clean -cache -testcache -modcache && \
-    rm -rf ${GOPATH}/src/* && \
-    rm -rf /tmp/*
+RUN go get github.com/huanteng/pgdiff && go clean -cache -testcache -modcache