build.sh

#!/bin/bash
set -e
set -x

RUNC_GOPATH="$(mktemp -d)"
CONTAINERD_GOPATH="$(mktemp -d)"
PWD="$(pwd)"

function cleanup() {
        rm -rf "${RUNC_GOPATH}"
        rm -rf "${CONTAINERD_GOPATH}"
        cd "${PWD}"
}

trap cleanup EXIT

dockerfile_path="${GOPATH}/src/github.com/docker/docker/Dockerfile"
RUNC_COMMIT=$(grep RUNC_COMMIT $dockerfile_path | head -n 1 | cut -d" " -f 3)
echo $RUNC_COMMIT

CONTAINERD_COMMIT=$(grep CONTAINERD_COMMIT $dockerfile_path | head -n 1 | cut -d" " -f 3)
echo $CONTAINERD_COMMIT

echo "Building runc"
GOPATH=$RUNC_GOPATH
git clone git://github.com/opencontainers/runc.git "$GOPATH/src/github.com/opencontainers/runc"
pushd "$GOPATH/src/github.com/opencontainers/runc"
git checkout -q "$RUNC_COMMIT"
make BUILDTAGS="seccomp selinux"
cp runc /usr/local/bin/docker-runc
popd

echo "Building containerd"
GOPATH=$CONTAINERD_GOPATH
git clone git://github.com/docker/containerd.git "$GOPATH/src/github.com/docker/containerd"
pushd "$GOPATH/src/github.com/docker/containerd"
git checkout -q "$CONTAINERD_COMMIT"
make 
cp bin/containerd /usr/local/bin/docker-containerd
cp bin/containerd-shim /usr/local/bin/docker-containerd-shim
cp bin/ctr /usr/local/bin/docker-containerd-ctr
popd

Thanks, bug yuck.

@mrunalp I've edited this slightly to not clutter the GOPATH of the caller:

old_gopath="${GOPATH}" # at the beginning
...
# your script here
...
export GOPATH=${old_gopath} # at the end

I've also found out that with set -e the scripts exits immediately when, for instance, containerd is running on the system and you cannot cp the binary cause the file is busy (I simply systemctl stop docker before running this script so containerd exits and the script can cp)

@runcom, yes adding those changes makes sense. I was trying to see if others are willing to use it. We can maintain this in a repo so it makes it easier to build docker on Fedora/RHEL. Thanks!

@runcom I have updated it with improvements. It doesn't clobber the global GOPATH. It ensures cleanup of the tmp build directories and returns you to the directory from where the script was executed. Please try it out! :)