Release copilot-cli: Release v0.5.0 · aws/copilot-cli

Secret and variable environment overrides now work for pipelines (#1539)

Please re-run copilot pipeline init && copilot pipeline update to generate the fixed buildspec and push it so that the build stage unblocks.
The autoscaling field is now assigned a default value if environment overrides are provided (#1469)
The --command flag for task run no longer splits quoted elements (#1467)
Dockerfiles no longer need to be under your workspace (#1446, #1448)
The --app flag is now prioritized over the application associated with your workspace (#1399)

New command family, $ copilot job , to manage scheduled tasks (#1531)
You can now use job init to create a manifest for a task that's invoked at a fixed schedule or periodically. Scheduled jobs can have timeouts and retries.
Just like for services, there are also few other commands available: job ls, job package, job deploy, job delete.

⚠️ Breaking change: The --svc flag is renamed to --name and --svc-type to --type for the copilot init command to accommodate for new workload types.
Support using an image instead of a Dockerfile (#1473)
Instead of building from a Dockerfile, you can now leverage the location field for using an existing image.
```
image:
  location: nginx # or account-id.dkr.ecr.region.amazonaws.com/my-app/my-svc:tag for pulling from ECR
```
Backend Services no longer need an exposed port (#1478)
AWS named profiles are no longer needed on app and environment deletions (#1510)

⚠️ Breaking change: The --profile flag is no longer needed for the env delete command and was removed .
Similarly, the --env-profiles flag is no longer needed for the app delete command and was removed.

Thank you so much for the contributions 🙏 ❤️
@mRoca (#1469)

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