├── Dockerfile
├── README.md
├── get-versions
└── LICENSE


/Dockerfile:
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1 | FROM ubuntu:14.04
2 | ADD get-versions /usr/bin/get-versions
3 | RUN chmod +x /usr/bin/get-versions
4 | ENTRYPOINT ["/usr/bin/get-versions"]
5 | CMD ["bash"]
6 | 


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/README.md:
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1 | # get-versions
2 | A docker image that outputs a RUN instruction documenting the specific version dependencies for a package
3 | 
4 | See [here](https://zwischenzugs.wordpress.com/2015/02/21/fight-docker-package-drift/)
5 | 
6 | 


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/get-versions:
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 1 | #!/bin/bash
 2 | 
 3 | set -e
 4 | 
 5 | for c in apt-get apt-cache
 6 | do
 7 | 	if [ $(which $c | wc -c) = 0 ]
 8 | 	then
 9 | 		echo "Could not find ${c} command on path. Is this a debian-based distro?"
10 | 		exit 1
11 | 	fi
12 | done
13 | 
14 | PKG=${1:?"please supply package name"}
15 | 
16 | apt-get install -y -q $PKG > /dev/null 2>&1
17 | 
18 | cat <(apt-cache --recurse --no-pre-depends --no-recommends --no-suggests --no-enhances --no-conflicts --no-breaks --no-replaces depends $PKG) <(echo $PKG) | grep "^[a-z]" | xargs apt-cache show | grep ^Package | sed 's/^Package: \(.*\)/dpkg -l \1 | grep ^ii | awk "{print \\$2,\\$3}"/g' | sh 2>/dev/null | sed 's/\(.*\) \(.*\)/\1=\2/' | tr '\n' ' ' | sed 's/^/RUN apt-get install -y /g'
19 | 
20 | echo ""
21 | 
22 | 


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/LICENSE:
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 1 | The MIT License (MIT)
 2 | 
 3 | Copyright (c) 2015 Ian Miell
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 
23 | 


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