🔖 Add release trigger for docker build (#203)

Whoops, I forgot to set up the release trigger for docker builds so I
had to manually tag the 0.3.0 image

Signed-off-by: Joe Runde <[email protected]>

Author: joerunde

.github/workflows/build_docker.yml

@@ -12,6 +12,8 @@ on:
       - "main"
     paths-ignore:
       - "**.md"
+  release:
+    types: [published]
 
 defaults:
   run: