c35f9f3b23
This commit adds support for OCI images. Most of the docker related code is reused for OCI classes and Docker classes have been refactored so now they are a splecialization of the OCI classes. It is done this way since KIWI internally only uses OCI format to operate with containers, therefore docker images just differ from OCI images by the way they are packaged or unpackaged.
47 lines
1.7 KiB
Python
47 lines
1.7 KiB
Python
# Copyright (c) 2015 SUSE Linux GmbH. All rights reserved.
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#
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# This file is part of kiwi.
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#
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# kiwi is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# kiwi is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with kiwi. If not, see <http://www.gnu.org/licenses/>
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#
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# project
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from kiwi.system.root_import.oci import RootImportOCI
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from kiwi.logger import log
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from kiwi.utils.compress import Compress
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from kiwi.command import Command
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class RootImportDocker(RootImportOCI):
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"""
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Extends OCI import class to hanlde docker images in a xz
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compressed tarball file.
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"""
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def extract_oci_image(self):
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"""
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Extract and converts to OCI the image from the provided
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image file to a temporary location to KIWI can work with it.
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"""
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if not self.unknown_uri:
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compressor = Compress(self.image_file)
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compressor.uncompress(True)
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self.uncompressed_image = compressor.uncompressed_filename
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skopeo_uri = 'docker-archive:{0}'.format(self.uncompressed_image)
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else:
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log.warning('Bypassing base image URI to skopeo tool')
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skopeo_uri = self.unknown_uri
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Command.run([
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'skopeo', 'copy', skopeo_uri, 'oci:{0}'.format(self.oci_layout_dir)
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])
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