changed github workflow naming

.github/workflows/docker-build-branch.yml

@@ -1,4 +1,4 @@
-name: Build and publish the docker image
+name: Build branch
 
 on:
   push:

.github/workflows/docker-build-nightly.yml

@@ -1,5 +1,5 @@
 ---
-name: Build and publish the docker image
+name: Build main
 
 on:
   push:

.github/workflows/docker-build-release.yml

@@ -1,5 +1,5 @@
 ---
-name: Build and publish the docker image
+name: Build release
 
 on:
   push: