Add molecule testing

slococo/playground/README.md

@@ -83,3 +83,21 @@ The role ensures the following SSH options are configured with the specified val
 - `PasswordAuthentication`: yes
 - `PermitEmptyPasswords`: no
 - `PermitRootLogin`: no
+
+## Molecule testing
+
+This collection includes Molecule tests to ensure the correctness of the roles. Molecule is a testing framework for Ansible roles.
+
+### Prerequisites
+
+Before running the Molecule tests, ensure that Molecule is installed. You can find installation instructions in the [official Molecule documentation](https://molecule.readthedocs.io/en/latest/installation.html).
+
+### Running tests
+
+Once Molecule is installed, you can run the tests by executing the following command in the root directory of the collection:
+
+```bash
+molecule test
+```
+
+This command will run both roles (`local_accounts` and `ssh_config`) in a Docker container, simulating real-world scenarios.