Docker in docker

Dockerfile

FROM docker:dind

RUN apk update && apk add --no-cache py-pip && apk add --no-cache bash
RUN pip install docker-compose

COPY . /project

WORKDIR /project

COPY docker/scaan/entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh

ENTRYPOINT /entrypoint.sh

entrypoint.sh

#!/bin/sh
set -e

# no arguments passed
# or first arg is `-f` or `--some-option`
if [ "$#" -eq 0 ] || [ "${1#-}" != "$1" ]; then
	# add our default arguments
	set -- dockerd \
		--host=unix:///var/run/docker.sock \
		--host=tcp://0.0.0.0:2375 \
		"$@"
fi

if [ "$1" = 'dockerd' ]; then
	# if we're running Docker, let's pipe through dind
	set -- "$(which dind)" "$@"

	# explicitly remove Docker's default PID file to ensure that it can start properly if it was stopped uncleanly (and thus didn't clean up the PID file)
	find /run /var/run -iname 'docker*.pid' -delete
fi

exec "$@" &
exec docker-compose up

RunningIt.sh

docker build -t my-dind:latest -f docker/dind/Dockerfile .
docker run --privileged --name my-docker-dind -p 8888:8000 -d my-dind:latest
docker ps | grep my-docker-dind
docker logs my-docker-dind
docker exec --privileged -it my-docker-dind bash