add documentation

crates/cdk-mintd/README.md

@@ -26,3 +26,17 @@
 ```sh
   vi ~/.cdk-mintd/config.toml
 ```
+
+## Running with Docker 
+
+### Build the Docker image
+
+```sh
+  docker build -t cdk-mintd .
+```
+
+### Run the Docker container with the configuration file mapped:
+
+```sh
+  docker run -v ~/.cdk-mintd/config.toml:/root/.cdk-mintd/config.toml cdk-mintd
+```