docker-run-build

Incrementally build Docker images.

Installation

pip install docker-run-build

Usage

Usage: docker-run-build [OPTIONS] IMAGE

Options:
--output TEXT         output image
--no-assert-hostname  Disable hostname validation
--mount TEXT          Mount volume (format: "src:target[:rw,:ro]")
--help                Show this message and exit.

Example

$ docker-run-build ORIGINAL_IMAGE --output NEW_IMAGE <<EOF
touch /tmp/FOOBAR
EOF

Updating image ORIGINAL_IMAGE (to: NEW_IMAGE)
Running code..., output:
Nothing

Now you can check that the file /tmp/FOOBAR exists in NEW_IMAGE:

$ docker run -it NEW_IMAGE ls -l /tmp/FOOBAR

If you omit the --output parameter, the ORIGINAL_IMAGE will be replaced.

Mounting volumes

You can use the --mount option to mount volumes during the run step:

$ docker-run-build ORIGINAL_IMAGE --mount /home/user1/:/mnt/vol1:rw <<EOF
cp /mnt/vol1/*.py /app/
EOF

Inspiration

This tool was inspired by this bash script.