Alpine-cGit
Container for Alpine Linux + cGit
This image containerizes cGit running under a LigHttpd server to serve locally hosted git repositories. Can also be used to clone and push/pull the repos using git via SSH/PubKey authentication. Scripts included to ease the tasks e.g creating or mirroring bare repositories, or sync them periodically.
Based on Alpine Linux from my alpine-s6 image with the s6 init system overlayed in it.
The image is tagged respectively for the following architectures,
- armhf
- armv7l
- aarch64
- x86_64 (retagged as the
latest
)
non-x86_64 builds have embedded binfmt_misc support and contain the qemu-user-static binary that allows for running it also inside an x86_64 environment that has it.
Get the Image
Pull the image for your architecture it's already available from Docker Hub.
# make pull
docker pull woahbase/alpine-cgit:x86_64
Configuration Defaults
-
cGit is deployed at the path
/git/
or/cgit/
. -
Default configuration listens to ports
80
and22
(ssh), these are published at64801
and64822
by default. -
Config file loaded from
/etc/cgitrc
edit or remount this with your own. A default is provided which is auto loaded if there aren't any config file to start with. -
To keep the same host keys, preserve their contents at
/etc/ssh
. These are re-generated if not found. -
Only allows pubkey authentication by default, either use the one for the user git, or add your own in
/home/git/.ssh/authorized_keys
to get clone and push/pull access. Default adds only the pubkey of thegit
user, if that does not exist, one set of private/public keys are generated. -
Repositories stored at
/home/git/repositories
. -
Web specific stuff, e.g
about.html
or syntax filters should be inside/var/www
, cgit provides some default filters(unused) located at/usr/lib/cgit/
.
Run
If you want to run images for other architectures, you will need to have binfmt support configured for your machine. multiarch, has made it easy for us containing that into a docker container.
# make regbinfmt
docker run --rm --privileged multiarch/qemu-user-static:register --reset
Without the above, you can still run the image that is made for your architecture, e.g for an x86_64 machine..
This images already has a user git
configured to drop
privileges to the passed PUID
/PGID
which is ideal if its used
to run in non-root mode. That way you only need to specify the
values at runtime and pass the -u git
if need be. (run id
in your terminal to see your own PUID
/PGID
values.)
Running make
starts the service.
# make
docker run --rm -it \
--name docker_cgit --hostname cgit \
-c 256 -m 256m \
-e PGID=1000 -e PUID=1000 \
-p 64801:80 -p 64822:22 \
-v data/git:/home/git \
-v data/ssh:/etc/ssh \
-v data/web:/var/www \
-v /etc/hosts:/etc/hosts:ro \
-v /etc/localtime:/etc/localtime:ro \
woahbase/alpine-cgit:x86_64
Create a bare repository with,
docker exec -u git -it docker_cgit /scripts/bareinit
Mirror an existing repository with,
docker exec -u git -it docker_cgit /scripts/mirror
Sync the repositories already tracking with their remote,
docker exec -u git -it docker_cgit /scripts/sync
Stop the container with a timeout, (defaults to 2 seconds)
# make stop
docker stop -t 2 docker_cgit
Removes the container, (always better to stop it first and -f
only when needed most)
# make rm
docker rm -f docker_cgit
Restart the container with
# make restart
docker restart docker_cgit
Shell access
Get a shell inside a already running container,
# make debug
docker exec -it docker_cgit /bin/bash
set user or login as root,
# make rdebug
docker exec -u root -it docker_cgit /bin/bash
To check logs of a running container in real time
# make logs
docker logs -f docker_cgit
Development
If you have the repository access, you can clone and build the image yourself for your own system, and can push after.
Setup
Before you clone the repo, you must have Git, GNU make, and Docker setup on the machine.
git clone https://github.com/woahbase/alpine-cgit
cd alpine-cgit
You can always skip installing make but you will have to type the whole docker commands then instead of using the sweet make targets.
Build
You need to have binfmt_misc configured in your system to be able to build images for other architectures.
Otherwise to locally build the image for your system.
[ARCH
defaults to x86_64
, need to be explicit when building
for other architectures.]
# make ARCH=x86_64 build
# sets up binfmt if not x86_64
docker build --rm --compress --force-rm \
--no-cache=true --pull \
-f ./Dockerfile_x86_64 \
--build-arg DOCKERSRC=woahbase/alpine-s6:x86_64 \
--build-arg PGID=1000 \
--build-arg PUID=1000 \
-t woahbase/alpine-cgit:x86_64 \
.
To check if its working..
# make ARCH=x86_64 test
docker run --rm -it \
--name docker_cgit --hostname cgit \
-e PGID=1000 -e PUID=1000 \
--entrypoint sh \
woahbase/alpine-cgit:x86_64 \
-ec 'git version;'
And finally, if you have push access,
# make ARCH=x86_64 push
docker push woahbase/alpine-cgit:x86_64
Maintenance
Sources at Github. Built at Travis-CI.org (armhf / x64 builds). Images at Docker hub. Metadata at Microbadger.
Maintained by WOAHBase.