minimalDockerImage

How do you create your docker image? For most people, they download a base docker image, such as ubuntu and then add their application upon the base image. This works good but the image has little bit big. Sometimes you don't really need a whole base image, you just simply want to make your docker application run correctly.

This tool will help you make minimal docker image. Before using this tool, you should make sure your application can run in one linux environment and then input your application absolute path to the tool. This tool will package the application and all its dependency .so files to a tarball or make a docker image directly if you have installed your docker in your running environment.

compile the tool

$ git clone https://github.com/ochinchina/minimalDockerImage.git
$ cd minimalDockerImage
$ export GOPATH=`pwd`
$ go install mdi
$ export PATH=$GOPATH/bin:$PATH

run the tool to make package for you

make a tarball file

Create a tarball to include /usr/bin/ls, /usr/bin/pwd file and their dependencies, execute following command:

$mdi -i /usr/bin/ls,/usr/bin/pwd -o test.tar create_tar

If too many files you want to include in the tarball file, you can put them into a file, for example put to input.txt

$ cat input.txt
/usr/bin/ls
/usr/bin/pwd

then use flag "-f file_name" to execute the command:

$ mdi -f input.txt -o test.tar create_tar

Except for the executable binary file, if you want to pack a directory or some non-executable binary file, this tool can also accept the directory file or non-executable file as input. If input a directory, this tool will try to find all the executable binary files and the .so files under the directory recursively, then find the dependency files for you.

For example, if you want to pack directory "/usr/bin" to the tarball, you can simply run:

$ mdi -i /usr/bin -o test.tar create_tar

if some .so files or executable binary files under /usr/bin depend on .so files in other directory, the output test.tar file will contains them also.

make docker image

If docker is started in the host running mdi tool, you can make a docker image directly, the optional flag "-i" and "-f" is same as the create_tar command.

For example, if you want to make a docker image named "haproxy" to include the /usr/bin/haproxy, you can run:

$ mdi -i /usr/bin/haproxy -o haproxy create_image

print all the files

If you just want to see what files will be contained in the docker image, you can run the tool like:

$ mdi -i /usr/bin/haproxy list_files

the above command will list all the files will be included in the docker image

License

The MIT License (MIT)

Copyright (c)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.