Please don't update ubuntu packages within the docker-compose

[alexanderankin]

Problem description:
The problem I'm seeing is very high cpu usage when i reboot my pc, htop says it is the containers from the getting started guide of this project.

Solution description:
I think the solution here is to simply not run apt-get update in the docker-compose file. I can submit a PR which fixes this and simply waits for the port instead of downloading a dependency to do it

Description of alternatives:
An alternative is to add this to the images used:

https://github.com/spring-cloud/spring-cloud-dataflow/blob/0b9ff6024c2983f63e16ab5709c697af31a0203f/src/docker-compose/docker-compose.yml#L57

https://github.com/spring-cloud/spring-cloud-dataflow/blob/0b9ff6024c2983f63e16ab5709c697af31a0203f/src/docker-compose/docker-compose.yml#L124

it seems like somehow this script already exists in this image, for instance:

https://github.com/spring-cloud/spring-cloud-dataflow/blob/0b9ff6024c2983f63e16ab5709c697af31a0203f/src/docker-compose/docker-compose.yml#L111-L120

Additional context:
seems like updating ubuntu packages on multiple containers detracts from the overall introductory experience

[alexanderankin]

btw here's how you'd do it - alexanderankin/docker-compose-waiting@c24d20b

[alexanderankin]

@markpollack - i should submit a pr for this right? I could get to it within the coming week

[markpollack]

sure, basically we just need to remove apt-get update in the docker compose file as it is already performed when creating the base image.

[corneil]

See PR #5069

[onobc]

Closed via 50c5937