Merge pull request #3 from suz-stripe/support-build-args

convert env vars to build args for custom builds

Dockerfile

@@ -1,12 +1,13 @@
-FROM dockercore/golang-cross:1.13.15
+ARG GOLANG_CROSS_VERSION=1.13.15
+FROM dockercore/golang-cross:${GOLANG_CROSS_VERSION}
 
 LABEL maintainer="[email protected]"
 
-ENV GORELEASER_VERSION=0.127.0
-ENV GORELEASER_SHA=bf7e0f34d1d46041f302a0dd773a5c70ff7476c147d3a30659a5a11e823bccbd
+ARG GORELEASER_VERSION=0.127.0
+ARG GORELEASER_SHA=bf7e0f34d1d46041f302a0dd773a5c70ff7476c147d3a30659a5a11e823bccbd
 
-ENV GORELEASER_DOWNLOAD_FILE=goreleaser_Linux_x86_64.tar.gz
-ENV GORELEASER_DOWNLOAD_URL=https://github.com/goreleaser/goreleaser/releases/download/v${GORELEASER_VERSION}/${GORELEASER_DOWNLOAD_FILE}
+ARG GORELEASER_DOWNLOAD_FILE=goreleaser_Linux_x86_64.tar.gz
+ARG GORELEASER_DOWNLOAD_URL=https://github.com/goreleaser/goreleaser/releases/download/v${GORELEASER_VERSION}/${GORELEASER_DOWNLOAD_FILE}
 
 RUN  wget ${GORELEASER_DOWNLOAD_URL}; \
 			echo "$GORELEASER_SHA $GORELEASER_DOWNLOAD_FILE" | sha256sum -c - || exit 1; \