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Add support for changes to internal Docker networking. #446

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  • Networking changes introduced in Docker 4.1.x and forward on Windows and MAC stop the direct use of the internal docker host IP returned by the docker run --rm --net=host eclipse/che-ip process. On Windows and MAC host.docker.internal needs to be used for internal connections between containers on separate docker networks.
  • host.docker.internal has been available on Windows and Mac since Docker Engine version 18.03 (March 2018). Support for host.docker.internal on Linux was introduced in version 20.10.0 (2020-12-08), but it does not run out of the box yet (as of Docker Engine 20.10.11 (2021-11-17)). You need to add --add-host=host.docker.internal:host-gateway to the docker run command in order for it to work.

Signed-off-by: Wade Barnes wade@neoterictech.ca

- Networking changes introduced in Docker 4.1.x and forward on Windows and MAC stop the direct use of the internal docker host IP returned by the `docker run --rm --net=host eclipse/che-ip` process. On Windows and MAC `host.docker.internal` needs to be used for internal connections between containers on separate docker networks.
- `host.docker.internal` has been available on Windows and Mac since Docker Engine version 18.03 (March 2018). Support for `host.docker.internal` on Linux was introduced in version 20.10.0 (2020-12-08), but it does not run out of the box yet (as of Docker Engine 20.10.11 (2021-11-17)). You need to add `--add-host=host.docker.internal:host-gateway` to the `docker run` command in order for it to work.

Signed-off-by: Wade Barnes <wade@neoterictech.ca>
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