Apply for docker community program

[tfr42]

https://github.com/deegree/deegree3-docker has used the automatic build feature of Docker Hub. This function has been disabled for free plans (https://www.docker.com/blog/changes-to-docker-hub-autobuilds/).
To enable the feature again we can apply for the docker community program https://www.docker.com/community/open-source/application.

[tfr42]

Workaround is to build the image on jenkins with:

docker login 
docker build -t deegree/deegree3-docker:latest -t deegree/deegree3-docker:v3.4.17 --force-rm --no-cache .
docker push deegree/deegree3-docker:v3.4.17 
docker push deegree/deegree3-docker:latest

[tfr42]

We have received the following information:

We appreciate your patience as we’ve been improving our Docker-Sponsored Open Source (DSOS) Program. And we have exciting updates to share on how to re-submit your application (in one click!) based on new eligibility criteria and so you can receive exclusive DSOS program benefits.

Expanded eligibility criteria
At our last Community All-Hands, we announced the DSOS Program’s updated eligibility criteria. This new eligibility lets us accept more members (even some commercially-funded projects!) and fuel our community's open source projects.

New insights and benefits
Program members can access additional benefits including:

Insights and analytics to show how your images are being used
Docker Hub DSOS badge to increase discoverability and brand awareness

To unlock this eligibility, we’re asking for you to re-apply using our new, streamlined application. For questions, feel free to reach out to us at @.com. We look forward to your submissions!

[tfr42]

Instead of pushing docker images to dockerhub we can use https://github.com/orgs/deegree/packages and the container images there.

[Vad1mo]

If, for some reason, the Docker-Sponsored Open-Source Program isn't working out, we are happy to help you out. We operate a Harbor-based container registry as a service that has many benefits over most of the other registries out there.

There are also features regarding containerized image distribution, that might be valuable too as well.