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Last pushed: 2 years ago
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The team brings you another container release featuring easy user mapping and community support. Find us for support at:

  • IRC on freenode at
  • Podcast covers everything to do with getting the most from your Linux Server plus a focus on all things Docker and containerisation!


Utility to copy from a given repository to a given repository.


docker create \
--name=readme-sync \
-e PUID=<UID> \
-e PGID=<GID> \
-p 80:80 \
-v </path/to/appdata>:/config \


The parameters are split into two halves, separated by a colon, the left hand side representing the host and the right the container side. For example with a port -p external:internal - what this shows is the port mapping from internal to external of the container. So -p 8080:80 would expose port 80 from inside the container to be accessible from the host's IP on port 8080 http://192.168.x.x:8080 would show you what's running INSIDE the container on port 80.

  • -p 80 - API Port
  • -v /config - Contains the db itself and all assorted settings.
  • -e PGID for GroupID - see below for explanation
  • -e PUID for UserID - see below for explanation

It is based on ubuntu xenial with s6 overlay, for shell access whilst the container is running do docker exec -it readme-sync /bin/bash.

User / Group Identifiers

Sometimes when using data volumes (-v flags) permissions issues can arise between the host OS and the container. We avoid this issue by allowing you to specify the user PUID and group PGID. Ensure the data volume directory on the host is owned by the same user you specify and it will "just work".

In this instance PUID=1001 and PGID=1001. To find yours use id user as below:

  $ id <dockeruser>
    uid=1001(dockeruser) gid=1001(dockergroup) groups=1001(dockergroup)

Setting up the application

Once the docker container is created, an example settings file will be copied to </path/to/appdata>/github-dockerhub-sync/settings.yml. This file should be modified to contain your Dockerhub email and password.

Using the application

In the examples below, github_repo and dockerhub_repo should look similar lsiodev/readme-sync.

API - GET command


Command Line

In the example below, the application would take the found at the
my_github/my_repo repo and save it on the
my_dockerhub/my_repo dockerhub repo's full description field.

NOTE: The [ and ] are important and must be in the command line.

docker exec -it readme-sync bash -c "rake update[my_github/my_repo,my_dockerhub/my_repo]"

Command Line with ENV variables



  • Shell access whilst the container is running: docker exec -it readme-sync /bin/bash
  • To monitor the logs of the container in realtime: docker logs -f readme-sync

  • container version number

docker inspect -f '{{ index .Config.Labels "build_version" }}' readme-sync

  • image version number

docker inspect -f '{{ index .Config.Labels "build_version" }}' lsiodev/readme-sync


  • 17.11.08: add github branch support.
  • 16.10.16: merge ruby app.
  • 11.10.16: Initial development release.
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