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# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
import spack.tengine as tengine
from . import writer, PathContext
@writer('docker')
class DockerContext(PathContext):
"""Context used to instantiate a Dockerfile"""
#: Name of the template used for Dockerfiles
template_name = 'container/Dockerfile'
@tengine.context_property
def manifest(self):
manifest_str = super(DockerContext, self).manifest
# Docker doesn't support HEREDOC so we need to resort to
# a horrible echo trick to have the manifest in the Dockerfile
echoed_lines = []
for idx, line in enumerate(manifest_str.split('\n')):
if idx == 0:
echoed_lines.append('&& (echo "' + line + '" \\')
continue
echoed_lines.append('&& echo "' + line + '" \\')
echoed_lines[-1] = echoed_lines[-1].replace(' \\', ')')
return '\n'.join(echoed_lines)
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