Docker container to build a Go project with gb

Simple container to build a Go project using gb with source on the host. Uses volumes to mount a host directory as the project directory in container.

Build project in current working directory

1. Make changes to Go code

2. Start go-gb container and use current directory as source for build

   $ docker run --rm -v=${PWD}:/home/builder/project memes/go-gb:1.5-v0.2.0

3. Docker will launch the container, mount current directory as volume and build the application with gb. Compiled output will be in /bin

Cross-compile current project

Same as above, but pass GOOS and GOARCH variables to create a .exe in bin/

$ docker run --rm -e GOOS=windows -e GOARCH=amd64 -v=${PWD}:/home/builder/project memes/go-gb:1.5-v0.2.0

Want to force a reset of gb vendor directory?

You should take care of that in local copy before invoking container, but it can be forced. Set the env var GO_GB_RESTORE to non-empty and a gb vendor restore will be executed before the build.

You say you need to add ldflags or conditional tags? Something more exotic?

Just like the cross-compile example, all supported Go build environment variables can be assigned by docker run -e ... invocation.

Additional flags can be passed to go build by using GO_GB_FLAGS variable. E.g. docker run -e GO_GB_FLAGS="-tags prod" ... will execute gb build -tags prod

Need SSH support for repos?

Add the keys to /home/builder/.ssh and make any necessary changes to .gitconfig

Clone the github repo go-gb to customise further.