Add health checks for Docker services, ACME environment readiness validation, and Certbot unit tests

- Introduced health checks to Docker Compose files for better service reliability.
- Added ACME environment readiness validation to ensure proper configuration for Certbot.
- Implemented unit tests for Certbot's `check_acme_environment_ready` method to cover edge cases.
- Improved E2E tests with startup wait adjustments and dynamic certificate issuance verification.
- Enhanced Kubernetes test cleanup with forced resource deletion for faster termination.

tests_e2e/utils.py

@@ -48,6 +48,9 @@ class DockerComposeFixture:
         if self.build:
             cmd.append("--build")
 
+        # Use native Docker healthcheck waiting
+        cmd.append("--wait")
+
         result = subprocess.run(
             cmd,
             capture_output=True,
@@ -96,7 +99,7 @@ class DockerComposeFixture:
         print(f"  → Stopping services from {compose_name}...")
 
         result = subprocess.run(
-            ["docker", "compose", "-f", self.compose_file, "down", "--remove-orphans"],
+            ["docker", "compose", "-f", self.compose_file, "down", "--remove-orphans", "-t", "0"],
             capture_output=True,
             text=True
         )