name the image correctly by using defined repo name as must be lowerc…

…ase (updated)

.github/workflows/gh_pkg_build.yml

@@ -10,7 +10,7 @@ on:
 # set some environment variables
 env:
   REGISTRY: ghcr.io
-  REPO: trc_mysql
+  REPO: chalklab/trc_mysql
 
 # define a job to run
 # this takes the 'Dockerfile' file at the root level and builds the image it defines and then