test: Updated readme

Author: alex-clayton-1

compose.yaml

@@ -108,8 +108,6 @@ services:
     ports:
       - "1433:1433"
     user: "root"
-    # volumes:
-    #   - db-data:/var/opt/mssql
     healthcheck:
       test:
         [

tests/ServiceLayer.IntegrationTests/README.md

@@ -1,4 +1,10 @@
-The integration tests require the following environment variables to run:
+# Integration Tests
+
+The integration tests start up docker containers using [compose.yaml](../../compose.yaml) and provide them with the environment variables defined in [.env.tests](.env.tests). Once the containers are up, the integration tests are executed, after the tests have finished, the containers are stopped.
+
+## How to run the tests
+
+To run the integration tests, you also need to pass the following environment variables as arguments when executing `dotnet test`:
 - AZURITE_ACCOUNT_KEY
 - AZURITE_ACCOUNT_NAME
 - AZURITE_BLOB_PORT
@@ -7,7 +13,7 @@ The integration tests require the following environment variables to run:
 - MESH_BLOB_CONTAINER_NAME
 - DATABASE_CONNECTION_STRING
 
-They can be passed as arguments like so
+E.g.
 ```sh
 dotnet test \
     -e AZURITE_ACCOUNT_KEY="Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw==" \