Update docs with docker build and run

README.md

@@ -7,3 +7,23 @@ An implementation of a Trust Registry for Self-Sovereign Identity Ecosystems
 After some initial discussion between ABSA and DIDx regaring development of a Trust Registry that can be used in the South African SSI Ecosystem we determined that both entities developed a version of a Trust Registry but we have a requirement to develop one implementation that can be used by everyone.
 
 For more detailed information regarding the current discussion and implementation requirements read the [HackMD Write Up](https://hackmd.io/heOazbtvSi2B18I7YWkGIg?view)
+
+## Run
+
+Build Docker image
+
+```sh
+docker build -t ssi-trust-registry .
+```
+
+Create `.env`
+
+```
+cp .env.example .env
+```
+
+Run Docker container
+
+```sh
+docker run -d -p 3000:3000 --name ssi-trust-registry --env-file .env ssi-trust-registry
+```