More small fixes.

- Update the prospector pre-commit hook, it was failing for some reason.
- Address some docstring issues it started complaining about.

.pre-commit-config.yaml

@@ -90,7 +90,7 @@ repos:
               --line-length=79
 
   - repo: https://github.com/PyCQA/prospector.git
-    rev: 1.5.1
+    rev: 1.7.1
     hooks:
       - id: prospector
         args:

images/docker/compose-health-check

@@ -13,9 +13,13 @@ import dotenv  # pylint: disable=import-error
 
 
 def get_project_containers_health(client, project):
-    """Get a Docker connection and the Docker Compose project name and return a
+    # noqa: D213
+    """Get the health of containers of a Compose project.
+
+    Get a Docker connection and the Docker Compose project name and return a
     dictionary of container objects and their health status (if available, else
-    their status)."""
+    their status).
+    """
     return {
         i: i.attrs["State"]["Health"]["Status"]
         if "Health" in i.attrs["State"]
@@ -27,13 +31,18 @@ def get_project_containers_health(client, project):
 
 
 def get_unhealthy_project_containers(client, project):
-    """Returns a list (could be empty) of containers that are not healthy or
-    not running (in case a health check is not set)."""
+    # noqa: D213
+    """Returns a list (could be empty) of containers that are not healthy.
+
+    Or in the case that a health check is not set, containers that are not
+    running.
+    """
     healths = get_project_containers_health(client, project)
     return [x for x in healths if healths[x] not in ["healthy", "running"]]
 
 
 def wait_for_project_health(project, timeout):
+    # noqa: D213
     """Wait for a Docker Compose project to be healthy.
 
     If all of the containers are healthy or running (because there's no
@@ -79,7 +88,6 @@ def get_project_name(args):
 
 def main():
     """Main entrypoint."""
-
     epilog = (
         "The Docker Compose project name is resolved in the following order:"
         "\n1. From the command line parameter."