Build issues on Linux about waltz-docker HOT 8 CLOSED

Also mentioned on the main README.md, but happy to update the docs if it isn’t clear:

https://github.com/rovats/waltz-docker#step-1-setup-maven-profiles

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@davidwatkins73 , I have improved the documentation as part of this issue. Are you happy for this to be closed?

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For the record:

• Linux Mint 19
• Docker 19.03.11

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Ah, localhost won't work from within the docker container.
You'll need to find the IP address of the Postgres container, and use that in the maven profile, like described here:

https://github.com/rovats/waltz-docker/blob/master/database/postgres/README.md#find-ip-address-of-the-postgres-server-to-use-in-maven-settingsxml

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@davidwatkins73 ^

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Thanks @rovats, that seems to have fixed it. Yes, it was my inability to follow instructions.

I don't know much about docker but this seems very complicated. Is there anything we can do on the core Waltz side to simplify - or is this stuff fairly obvious once you understand Docker ?

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I think once you understand how Docker networking works, this shouldn't be too much of an issue.
https://docs.docker.com/engine/reference/run/#network-settings

There are various ways to access the host machine from a container: setting up your own network, assigning a static IP address to your host machine (in the custom network), or a static IP to your container in the custom network (this is useful since container IP addresses are dynamic - assigned in incremental order at container startup).

Also, there is a special dns name host.docker.internal that can be used to access the host (or 172.0.17.1 might also work):
https://docs.docker.com/docker-for-mac/networking/#i-want-to-connect-from-a-container-to-a-service-on-the-host

A few more options listed here:
https://stackoverflow.com/questions/24319662/from-inside-of-a-docker-container-how-do-i-connect-to-the-localhost-of-the-mach

Happy to include some more information in the docs to make this clear - Done, let me know if the docs can be improved further.

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Hi, yes, happy for this to be closed. Thanks!

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