toolchain in docker-utils-0.1.26

- old
+ new

@@ -1,9 +1,18 @@
 #!/usr/bin/env ruby
 
 EXPUNGE_ENV_KEYS = [
-  'TMPDIR'
+  'TMPDIR',
+  'DOCKER_HOST',
+  'LOGNAME',
+  'LANG',
+  'PWD',
+  'OLDPWD',
+  'PS1',
+  'SHELL',
+  'USER',
+  '_'
 ]
 
 require 'optparse'
 require 'pathname'
 
@@ -49,12 +58,18 @@
   guest_repo_root = Pathname.new('/src')
   guest_cwd = guest_repo_root + rel_cwd
 
   toolchain_docker_args.concat([
     '-v', "#{host_repo_root}:#{guest_repo_root}",
-    '-w', guest_cwd.to_s
+    '-w', '/build'
   ])
+
+  data_container_name = host_repo_root.basename.to_s + "-build"
+
+  toolchain_docker_args.concat([
+    "--volumes-from=#{data_container_name}"
+  ])
 end
 
 # interactivity options
 if $stdin.tty? and $stdout.tty?
   toolchain_docker_args.concat(['-i', '-t'])
@@ -63,17 +78,49 @@
 # environment options
 exposed_env_keys = ENV.keys - EXPUNGE_ENV_KEYS
 container_env_keys = `docker inspect -f '{{.Config.Env}}' #{toolchain_image}`.chomp[1..-2].split(' ').map{ |pair| pair.split('=').first }
 toolchain_docker_args.concat((exposed_env_keys - container_env_keys).map{ |k| ['-e', k] }.flatten)
 
+toolchain_docker_args.concat([
+  '-v', "#{ENV['HOME']}/.ssh:/root/.ssh"
+])
+
 # network options
 if options[:bind_net]
   toolchain_docker_args.push '--net=host'
 end
 
 
 
 docker_bin_path = `which docker`.chomp
-Kernel.exec docker_bin_path, 'run', '--rm',
-  *toolchain_docker_args,
-  toolchain_image,
-  *toolchain_subcommand_args
+toolchain = lambda do |*subcommand|
+  Kernel.system docker_bin_path, 'run', '--rm',
+    *toolchain_docker_args,
+    toolchain_image,
+    *subcommand
+end
+
+if data_container_name
+  data_container_image = 'tianon/true:latest'
+  data_container_image_available = system docker_bin_path, 'inspect', '-f', '{{.Id}}', data_container_image, out: '/dev/null', err: '/dev/null'
+  unless data_container_image_available or system(docker_bin_path, 'pull', data_container_image)
+    $stderr.puts "could not locate data-container image '#{data_container_image}'; aborting"
+    Kernel.exit 1
+  end
+
+  data_container_exists = system docker_bin_path, 'inspect', '-f', '{{.Id}}', data_container_name, out: '/dev/null', err: '/dev/null'
+
+  #toolchain.call 'find', '/build', '-mindepth', '1', '-maxdepth', '1', '-type', 'l', '-exec', 'rm', '{}', ';'
+  unless data_container_exists
+    Kernel.system(
+      docker_bin_path, 'run',
+      "--name=#{data_container_name}",
+      '-v', '/build',
+      data_container_image
+    )
+
+    toolchain.call 'find', '/src', '-mindepth', '1', '-maxdepth', '1', '-exec', 'ln', '-sF', '{}', ';'
+  end
+end
+
+
+toolchain.call *toolchain_subcommand_args