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README.md

Dockerize

Dockerize will pack up your dynamically linked ELF binaries and all their dependencies and turn them into a Docker image.

Some example images built with this tool are available from:

Installation

Dockerize is a standard Python package. You can install it with pip straight from Github like this:

pip install git+https://github.com/larsks/dockerize

Synopsis

usage: dockerize [-h] [--tag TAG] [--cmd CMD] [--entrypoint ENTRYPOINT]
                 [--no-build] [--output-dir OUTPUT_DIR] [--add-file SRC DST]
                 [--symlinks SYMLINKS] [--user USER] [--group GROUP]
                 [--filetools] [--verbose] [--debug] [--version]
                 ...

positional arguments:
  paths

optional arguments:
  -h, --help            show this help message and exit
  --add-file SRC DST, -a SRC DST
                        Add file <src> to image at <dst>
  --symlinks SYMLINKS, -L SYMLINKS
                        One of preserve, copy-unsafe, skip-unsafe, copy-all
  --user USER, -u USER  Add user to /etc/passwd in image
  --group GROUP, -g GROUP
                        Add group to /etc/group in image
  --filetools           Add common file manipulation tools
  --version             show program's version number and exit

Docker options:
  --tag TAG, -t TAG     Tag to apply to Docker image
  --cmd CMD, -c CMD
  --entrypoint ENTRYPOINT, -e ENTRYPOINT

Output options:
  --no-build, -n        Do not build Docker image
  --output-dir OUTPUT_DIR, -o OUTPUT_DIR

Logging options:
  --verbose
  --debug

A simple example

Create a sed image:

dockerize -t sed /bin/sed

Use it:

$ echo hello world | docker run -i sed s/world/jupiter
hello jupiter

A more complicated example

Create an image named thttpd:

dockerize -t thttpd \
  -a /var/www/thttpd /var/www \
  --entrypoint '/usr/sbin/thttpd -D' \
  --cmd '-d /var/www' \
  /usr/sbin/thttpd

Serve default content:

docker run thttpd

Serve your own content:

docker run -v /my/content:/var/www thttpd

About

A tool for creating minimal docker images from dynamic ELF binaries.

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