66 lines
2.3 KiB
Python
66 lines
2.3 KiB
Python
#!/usr/bin/env python
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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def debian_package_install(packages):
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"""Jinja utility method for building debian-based package install command.
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apt-get is not capable of installing .deb files from a URL and the
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template logic to construct a series of steps to install regular packages
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from apt repos as well as .deb files that need to be downloaded, manually
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installed, and cleaned up is complicated. This method will construct the
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proper string required to install all packages in a way that's a bit
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easier to follow.
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:param packages: a list of strings that are either packages to install
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from an apt repo, or URLs to .deb files
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:type packages: list
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:returns: string suitable to provide to RUN command in a Dockerfile that
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will install the given packages
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:rtype: string
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"""
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cmds = []
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# divide the list into two groups, one for regular packages and one for
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# URL packages
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reg_packages, url_packages = [], []
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for package in packages:
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if package.startswith('http'):
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url_packages.append(package)
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else:
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reg_packages.append(package)
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# handle the apt-get install
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if reg_packages:
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cmds.append('apt-get update')
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cmds.append('apt-get -y install --no-install-recommends {}'.format(
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' '.join(reg_packages)
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))
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cmds.append('apt-get clean')
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cmds.append('rm -rf /var/lib/apt/lists/*')
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# handle URL packages
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for url in url_packages:
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# the path portion should be the file name
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name = url[url.rfind('/') + 1:]
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cmds.extend([
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'curl --location {} -o {}'.format(url, name),
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'dpkg -i {}'.format(name),
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'rm -rf {}'.format(name),
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])
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# return the list of commands
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return ' && '.join(cmds)
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