This removes `bash` dependency from save/load integration tests.
It used to call `/bin/bash -c 'c:\...\docker.exe'` which is not valid.
Also removed usage of tempdirs and temp files for saving/loading
repos. All are now done using in-memory pipes and buffers.
Created `runCommandPipelineWithOutput` helper to replace the
`/bin/bash -c 'a | b | c'` using pipes and returning output from
last command in the pipeline. This makes the code even shorter
and readable.
Signed-off-by: Ahmet Alp Balkan <ahmetalpbalkan@gmail.com>
Upstream-commit: b81105eaca56e7b22c97e24b7314419ee0a4f2a9
Component: engine
6e1d109cda