initial work on docker containerization support

.gitignore

@@ -8,3 +8,7 @@ build/
 dist/
 *egg-info/
 *.swp
+
+Dockerfile.*
+Singularity.*
+test-reports/

easybuild/main.py

@@ -57,7 +57,7 @@
 from easybuild.framework.easyconfig.tools import parse_easyconfigs, review_pr, skip_available
 from easybuild.framework.easyconfig.tweak import obtain_ec_for, tweak
 from easybuild.tools.config import find_last_log, get_repository, get_repositorypath, build_option
-from easybuild.tools.containers import containerize
+from easybuild.tools.containers.common import containerize
 from easybuild.tools.docs import list_software
 from easybuild.tools.filetools import adjust_permissions, cleanup, write_file
 from easybuild.tools.github import check_github, find_easybuild_easyconfig, install_github_token
@@ -390,6 +390,7 @@ def main(args=None, logfile=None, do_build=None, testing=False, modtool=None):
         easyconfigs = tweak(easyconfigs, build_specs, modtool, targetdirs=tweaked_ecs_paths)
 
     if options.containerize:
+        # if --containerize/-C create a container recipe (and optionally container image), and stop
         containerize(easyconfigs)
         cleanup(logfile, eb_tmpdir, testing)
         sys.exit(0)

easybuild/tools/config.py

@@ -105,6 +105,9 @@
 FORCE_DOWNLOAD_CHOICES = [FORCE_DOWNLOAD_ALL, FORCE_DOWNLOAD_PATCHES, FORCE_DOWNLOAD_SOURCES]
 DEFAULT_FORCE_DOWNLOAD = FORCE_DOWNLOAD_SOURCES
 
+DOCKER_BASE_IMAGE_UBUNTU = 'ubuntu:16.04'
+DOCKER_BASE_IMAGE_CENTOS = 'centos:7'
+
 
 # utility function for obtaining default paths
 def mk_full_default_path(name, prefix=DEFAULT_PREFIX):

easybuild/tools/containers/__init__.py

@@ -0,0 +1,24 @@
+# #
+# Copyright 2009-2018 Ghent University
+#
+# This file is part of EasyBuild,
+# originally created by the HPC team of Ghent University (http://ugent.be/hpc/en),
+# with support of Ghent University (http://ugent.be/hpc),
+# the Flemish Supercomputer Centre (VSC) (https://www.vscentrum.be),
+# Flemish Research Foundation (FWO) (http://www.fwo.be/en)
+# and the Department of Economy, Science and Innovation (EWI) (http://www.ewi-vlaanderen.be/en).
+#
+# https://github.com/easybuilders/easybuild
+#
+# EasyBuild is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation v2.
+#
+# EasyBuild is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with EasyBuild.  If not, see <http://www.gnu.org/licenses/>.
+# #