PEER-220: Update README

Signed-off-by: SeeuSim <[email protected]>

Author: SeeuSim

backend/matching/README.md

@@ -1 +1,29 @@
 # Matching Service
+
+## Running with Docker (Standalone)
+
+1. Run this command to build:
+    ```sh
+    docker build \
+      -t match-express-local \
+      --build-arg port=9004 \
+      -f express.Dockerfile .
+    ```
+2. Run this command, from the root folder:
+    ```sh
+    make db-up
+    ```
+
+3. Run the necessary migrate and seed commands, if you haven't yet.
+
+4. Run this command to expose the container:
+    ```sh
+    docker run -p 9004:9004 --env-file ./.env.docker match-express-local
+    ```
+5. To stop the process, use the Docker UI or CLI with `docker rm -f <container_id>` (The child process loop has issues terminating)
+
+## Running with Docker-Compose (Main config)
+
+Edit the variables in the `.env.compose` file and run `make up` from the root folder.
+
+Any startup instructions will be run from `entrypoint.sh` instead.