New mount test structure.

test/docker_tests/configurations/README.md

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+# NetAlertX Docker Test Configurations
+
+This directory contains docker-compose configurations for different test scenarios.
+
+## Available Configurations
+
+### readonly
+- **File**: `docker-compose.readonly.yml`
+- **Description**: Tests with a read-only container filesystem
+- **Use case**: Verify that the application works correctly when the container filesystem is read-only
+
+### writable
+- **File**: `docker-compose.writable.yml`
+- **Description**: Tests with writable tmpfs mounts for performance
+- **Use case**: Standard testing with optimized writable directories
+
+## Mount Diagnostic Tests
+
+The `mount-tests/` subdirectory contains 24 docker-compose configurations that test all possible mount scenarios for each path that NetAlertX monitors:
+
+- **6 paths**: `/app/db`, `/app/config`, `/app/api`, `/app/log`, `/services/run`, `/services/config/nginx/conf.active`
+- **4 scenarios per path**: `no-mount`, `ramdisk`, `mounted`, `unwritable`
+- **Total**: 24 comprehensive test configurations
+
+### Running Tests
+
+Use pytest to run the mount diagnostic tests:
+
+```bash
+cd /workspaces/NetAlertX/test/docker_tests
+pytest test_mount_diagnostics_pytest.py -v
+```
+
+Or run specific test scenarios:
+
+```bash
+pytest test_mount_diagnostics_pytest.py -k "db_ramdisk"
+```
+
+### Test Coverage
+
+Each test validates that the mount diagnostic tool (`/entrypoint.d/10-mounts.py`) correctly identifies:
+- **Good configurations**: No issues reported, exit code 0
+- **Bad configurations**: Issues detected in table format, exit code 1
+
+The tests ensure that persistent paths (db, config) require durable storage (volumes) while non-persistent paths (api, log, run) benefit from fast storage (tmpfs).