Created
June 13, 2014 05:21
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convert a bosh job into a Dockerfile that builds a container with all the job's packages installed
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require 'yaml' | |
require 'fileutils' | |
job = ARGV[0] | |
job_spec = YAML.load_file(File.join('jobs', job, 'spec')) | |
packages = job_spec['packages'] | |
work_dir = 'docker' | |
FileUtils.mkdir_p(work_dir) | |
docker_file = open(File.join(work_dir, 'Dockerfile'), 'w') | |
docker_file << "FROM ubuntu\n" | |
docker_file << "ADD pre_packaging /build\n" | |
docker_file << "RUN mkdir -p /var/vcap/packages\n" | |
docker_file << "\n" | |
pre_packaging_dir = FileUtils.mkdir_p(File.join(work_dir, 'pre_packaging')) | |
def package_deps(package) | |
spec = YAML.load_file(File.join('packages', package, 'spec')) | |
deps = (spec.fetch('dependencies', [])).map { |p| package_deps(p) }.flatten | |
deps << package | |
end | |
build_order = packages.inject([]) { |order, p| order + package_deps(p) }.uniq | |
build_order.each do |package| | |
package_dir = File.join('packages', package) | |
pre_packaging_script = File.join(package_dir, 'pre_packaging') | |
FileUtils.mkdir_p(File.join(pre_packaging_dir, package)) | |
packaging_script = File.join(package_dir, 'packaging') | |
open(packaging_script) do |f| | |
docker_file << "# #{package}\n" | |
docker_file << "ENV BOSH_INSTALL_TARGET /var/vcap/packages/#{package}\n" | |
docker_file << "RUN cd /build/#{package}\n\n" | |
f.each_line do |line| | |
docker_file << "RUN #{line}" | |
end | |
docker_file << "\n" | |
end | |
# create temp dir | |
# puts package files in temp dir | |
# | |
# if pre_packaging script | |
# set BUILD_DIR to temp dir | |
# cd temp dir | |
# run prepackaging script | |
# | |
# tar up temp dir and put in docker/pre_packaging/package | |
end |
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