This standardizes the extraction code and makes it easier to reuse in future implementations of file extraction.
Additionally, this adds a way to extract folders from codebases.
A recent update to compose executes a stat call in the current working directory, which may have incorrect permissions for execution once the user is changed to the dokku user. This change forces all compose commands to execute in the /tmp directory by using a helper function to execute compose up/down.
Closes#7705
Previously, checking if an app was deployed actually checked if there were any running processes. This is not only incorrect, but also fails to take into account applications that do not have running processes and are only used for one-off commands.
This fix migrates apps to the new "deployed" property which is set in core-post-deploy. The result is a slightly faster "deployed" check that is correct and allows non-scaled apps to actually work.
Closes#4398
