How can i configure containers to have a static IP even after restart?
What is your use case that you need a static IP on the container?
If you really want to map an IP to a container, that is possible without managing the actual IP of the container.
- Add the IP as a secondary IP to the host
- start the container with ports published to that IP:
docker run -p 1.2.3.4:443:443 -d mynginx
The normal docker networking stack is used. Your container’s published port listens on the secondary IP of 1.2.3.4. The actual container will get an auto-assigned IP address, but this is generally okay.
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But how can i connect to this IP (1.2.3.4 for example) from any place outside the docker host?
You would add 1.2.3.4 to the host as a secondary ip before you would do the docker run -p 1.2.3.4:443:443.