#!/bin/bash
set -e

BUILD_IMAGE_NAME="docker-machine-build"
GOOS=${GOOS:-"darwin linux windows"}
GOARCH=${GOARCH:-"386 amd64 arm"}

docker build -t ${BUILD_IMAGE_NAME} .

BUILD_CONTAINER=$(docker run -d \
    ${BUILD_IMAGE_NAME} \
    gox \
    -os "$GOOS" \
    -arch "$GOARCH" \
    -output="docker-machine_{{.OS}}-{{.Arch}}" \
    -ldflags="-w -X github.com/docker/machine/version.GitCommit `git rev-parse --short HEAD`")
cleanup_container() {
    docker rm -v ${BUILD_CONTAINER}
}
trap cleanup_container EXIT

docker logs -f ${BUILD_CONTAINER} &
BUILD_STATUS=$(docker wait ${BUILD_CONTAINER})
if [[ ${BUILD_STATUS} != 0 ]]; then exit ${BUILD_STATUS}; fi

BUILT_IMAGE=$(docker commit ${BUILD_CONTAINER})
cleanup_image() {
    cleanup_container
    docker rmi ${BUILT_IMAGE}
}
trap cleanup_image EXIT

echo "Copying built binaries:"
for f in $(docker run --rm ${BUILT_IMAGE} sh -c 'echo docker-machine_*'); do
    echo "  "${f}
    docker cp ${BUILD_CONTAINER}:/go/src/github.com/docker/machine/${f} ./
done
echo Done