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aptly

aptly in a container backed by nginx

aptly is a swiss army knife for Debian repository management: it allows you to mirror remote repositories, manage local package repositories, take snapshots, pull new versions of packages along with dependencies, publish as Debian repository.

Requirements / Dependencies

Docker 1.6 or higher, we are using the Docker syslog driver in this container and this feature made its debut in 1.6

Start the container

Run (adjust to suit your environment)

docker run \
--detach=true \
--log-driver=syslog \
--name="aptly" \
--restart=always \
-e FULL_NAME="First Last" \
-e EMAIL_ADDRESS="youremail@example.com" \
-e GPG_PASSWORD="PickAPassword" \
-e HOSTNAME=aptly.example.com \
-v /dockerhost/directory/with/lots/of/space:/opt/aptly \
-p 80:80 \
bryanhong/aptly:latest

Wait until the GPG keyrings are created (not 0 bytes) before proceeding (it can take a few minutes). They will be in the bind mount location you chose in above.

Create a mirror of Ubuntu's main repository

The initial download of the repository may take quite some time depending on your bandwidth limits, it may be in your best interest to open a tmux or screen session before proceeding.
Attach to the container docker exec -it aptly /bin/bash
By default, /opt/update_mirror.sh will automate the creation of an Ubuntu 14.04 Trusty repository, if you want a different release, modify the variables in the script.
Run /opt/update_mirror.sh
If the script fails due to network disconnects etc, just re-run it.

When the script completes, you should have a functional mirror that you can point a client to.

Point a host at the mirror

Fetch the public PGP key from your aptly repository and add it to your trusted repositories

wget http://FQDN.OF.APTLY/aptly_repo_key.pub
apt-key add aptly_repo_key.pub

Backup then replace /etc/apt/sources.list

cp /etc/apt/sources.list /etc/apt/sources.list.bak
echo "deb http://FQDN.OF.APTLY/ ubuntu main" > /etc/apt/sources.list
apt-get update

You should be able to install packages from your mirror at this point!

Checkout the excellent aptly documentation here