Update workflows to use 'main' instead of 'master'

Author: DanVanAtta

.github/workflows/master.yml .github/workflows/main.yml.github/workflows/master.yml renamed to .github/workflows/main.yml

@@ -1,16 +1,16 @@
-# Runs when master branch is updated.
+# Runs when main branch is updated.
 # Creates docker image & publishes to docker packages
 # Uses ansible to setup & configure production
 # Executes a blue/green deployment of the latest code
-name: Master Branch Build
+name: Main Branch Build
 on:
   push:
     branches:
-      - master
+      - main
 jobs:
   build:
     env:
-      IS_MASTER_BUILD: ${{ github.event_name == 'push' && github.ref == 'refs/heads/master' }}
+      IS_MAIN_BUILD: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -19,7 +19,7 @@ jobs:
           distribution: temurin
           java-version: 21
       - name: Login to GitHub Container Registry
-        if: ${{ env.IS_MASTER_BUILD }}
+        if: ${{ env.IS_MAIN_BUILD }}
         uses: docker/login-action@v1
         with:
           registry: ghcr.io
@@ -30,7 +30,7 @@ jobs:
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: build and push docker containers
-        if: ${{ env.IS_MASTER_BUILD }}
+        if: ${{ env.IS_MAIN_BUILD }}
         run: make docker-push
 
 #      - uses: webfactory/ssh-agent@v0.9.0