Minor fix in a README

cityofships · cityofships · commit 5da1c3b7e90b · 2021-01-29T09:57:16.000+01:00
diff --git a/README.md b/README.md
@@ -59,7 +59,7 @@ docker pull stackhpc/squid:4.4-8
 Alternatively you can build the image yourself.
 
 ```bash
-docker build -t stackhpc/squid github.com/stackhpc/docker-squid
+docker build -t stackhpc/squid:4.4-8 github.com/stackhpc/docker-squid
 ```
 
 ## Quickstart
