Docker container for Go builds

build.sh

#!/bin/bash

BUILD_DIR=/build/go
DIST_DIR=/build/dist

PRIVATE_DIR=$BUILD_DIR/src/morhekil/example
TEST_PACKAGE=morhekil/example/main
BIN_PACKAGE=morhekil/example/cmd

source /etc/profile

# Prepare the directory structure
mkdir -p `dirname $PRIVATE_DIR`
export GOPATH=$BUILD_DIR

# Checkout private repositories if they don't exist
if [ ! -d $PRIVATE_DIR ]; then
  git clone git@bitbucket.org:morhekil/example.git $PRIVATE_DIR
fi;

# Test and build
go get $BIN_PACKAGE
go get -t $TEST_PACKAGE
go test $TEST_PACKAGE && go build $BIN_PACKAGE -o $DIST_DIR/example

Dockerfile

FROM ubuntu

# Download and unpack golang archive
RUN apt-get update
RUN apt-get install -y wget git
RUN wget https://storage.googleapis.com/golang/go1.3.1.linux-amd64.tar.gz -O /tmp/golang.tar.gz
RUN tar -C /usr/local -xzf /tmp/golang.tar.gz

# Configure the environment
RUN echo 'export PATH=$PATH:/usr/local/go/bin' >> /etc/profile.d/go.sh
RUN echo 'export GOPATH=$HOME/go' >> /etc/profile.d/go.sh

# Set up ssh client
RUN echo "IdentityFile ~/.ssh/id_rsa" >> /etc/ssh/ssh_config
RUN mkdir -p /root/.ssh
COPY id_rsa /root/.ssh/id_rsa
RUN chown 600 /root/.ssh/id_rsa
RUN ssh-keyscan -H bitbucket.org >> /root/.ssh/known_hosts
RUN ssh-keyscan -H github.com >> /root/.ssh/known_hosts

# Copy the buildscript
COPY build.sh /usr/local/bin/build

First rough version of Docker container for Go builds. Checks out the sources, runs tests and builds the binary.

Assuming the image has been built with "gobuilder" tag (e.g. docker build -t gobuilder .), and there's a dist subdirectory on the current path, usage is:

docker run --rm -v `pwd`/dist:/build/dist/ gobuilder build

It will save the compiled binary into dist for further use.

Next up: automated deployment (capistrano?). Blog post is coming up right after that at speakmy.name