Use GitHub Container Registry for Docker images

GHCR allows images to be pulled anonymously

README.md

@@ -60,13 +60,13 @@ The `HASH_SALT` is used to generate unique values for your installation.
 
 ### Build the application
 
-```
+```bash
 npm run build
 ```
 
 ### Start the application
 
-```
+```bash
 npm start
 ```
 
@@ -78,15 +78,26 @@ or change the [port](https://nextjs.org/docs/api-reference/cli#production) to se
 
 To build the umami container and start up a Postgres database, run:
 
-```
+```bash
 docker-compose up
 ```
 
+Alternatively, to pull just the Umami Docker image with PostgreSQL support:
+```bash
+docker pull ghcr.io/mikecao/umami:postgresql-latest
+```
+
+Or with MySQL support:
+```bash
+docker pull ghcr.io/mikecao/umami:mysql-latest
+```
+
+
 ## Getting updates
 
 To get the latest features, simply do a pull, install any new dependencies, and rebuild:
 
-```
+```bash
 git pull
 npm install
 npm run build
@@ -94,4 +105,4 @@ npm run build
 
 ## License
 
-MIT
+MIT