Changes Details:
--------------
Fixes: #36395
Refactoring the code to do the following:
1. Add the method `errBindSourceDoesNotExist` inside `validate.go` to be in-line with the rest of error message
2. Utilised the new method inside `linux_parser.go`, `windows_parser.go` and `validate_test.go`
3. Change the format from `bind mount source path: '%s' does not exist` to `bind mount source path does not exist: %s`
4. Reflected the format change into the 2 unit tests, namely: `volume_test.go` and `validate_test.go`
5. Reflected the format change into `docker_api_containers_test.go` integration test
Signed-off-by: Amr Gawish <amr.gawish@gmail.com>
Validation of Mounts was only performed on container _creation_, not on
container _start_. As a result, if the host-path no longer existed
when the container was started, a directory was created in the given
location.
This is the wrong behavior, because when using the `Mounts` API, host paths
should never be created, and an error should be produced instead.
This patch adds a validation step on container start, and produces an
error if the host path is not found.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
