hinshun/go-cross is a Docker image to cross compile golang binaries and plugins to linux/darwin. It is based off work from docker/cli:
- https://hub.docker.com/r/dockercore/golang-cross
- https://github.com/docker/cli/tree/ee461303f9e74937a0a598650249f4331b1dd498/scripts/build
Using hinshun/go-cross:mod to cache go modules and hinshun/go-cross:build that has ONBUILD triggers you can define a Dockerfile with only the following:
FROM hinshun/go-cross:mod AS mod
FROM hinshun/go-cross:buildFor example, if my project looks like this:
❯ tree
.
├── cmd
│ └── program
│ └── main.go
├── Dockerfile
├── go.mod
└── go.sum
Then you can cross-compile the program like so (BUILDMODE and LDFLAGS are optional):
docker build -t my-cross-compile --build-arg PKG="./cmd/program" --build-arg BUILDMODE="default" --build-arg LDFLAGS="" .Extract the binaries by creating a temporary container and docker cp them out.
mkdir bin
docker create --name tmp my-cross-compile bash
docker cp tmp:/root/go/bin/. bin
docker rm tmpIf you have private go modules, you can use that as long as the following are true:
- The stage is set to
AS mod - The go module cache is in
/root/.cache/go-buildand/root/go/pkg/mod
FROM golang:1.11-alpine AS mod
ENV GOPATH=/root/go
ENV GOCACHE=/root/.cache/go-build
# Copy or mount in SSH, certificates, etc...
RUN go mod download
FROM hinshun/go-cross:build