* Try running tests in Docker
* Spawn new container for each test
* Store test artifacts outside of mount
* When requested, build up to date image in test script
* sudo is unneccessary in containerized test env
* Skip azure test
* Backdate fixture file in JSON database
* Pin versions for azure tools
* Mount temp volume for /var/lib/docker to prevent dangling ones created by VOLUME instruction
* Fail backdating tests with message
* Add some documentation on test setup
* Cache images
* Run compose stacks with shortened default timeout
* Skip backends while pruning
* Add pruning test step and silence download log for better readability
* Add test cases for pruning in all backends
Also add -q or --quiet-pull to all tests.
* Add test case for skipping backends while pruning
* Adjusted test logging, generate new test spec file
* Gitignore for temp test file
