Allow to define which services a step uses and deprecate detached

[qwerty287]

Add a new uses that allows to define the services a step uses to not run services the whole time (for now it's similar to detached).

Example

steps:
  - name: x
    image: alpine
  - name: y
    image: alpine
  - name: z
    image: alpine
    uses: [ some_service ]
services:
  - name: some_service
    image: mysql

Order/stages:

1. x
2. y, and some_service is started
3. z

TODO:

• testing
• kill services once their steps finished
• allow services to define uses so they can use other services
• allow services to define depends_on so they can depends on steps
• docs

closes #2495

[6543]

it does not solve the thing detatched was able to and is now supposed to remove :/

I still if following the KISS principe detatched is the best way to do so.

yes the proposed feature here would have other benefits through ;)

PS: if service is not registered at a single step -> always run; else only if step is also exec ...

[qwerty287]

it does not solve the thing detatched was able to and is now supposed to remove :/

Why? The service is started when the step it needs is started. If you have other steps running before it, the service can use the artifacts of this step. We could also try to extend this by allowing depends_on for services and also allow referencing pipeline steps there.

I still if following the KISS principe detatched is the best way to do so.

But this mixes serviced and pipeline steps. You shouldn't be able to define services in the steps section.

PS: if service is not registered at a single step -> always run; else only if step is also exec ...

No, it should fail, just like depends_on.

[woodpecker-bot]

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