Add Fly.io deployment workflow for Open5GS

Author: Reece Dixon

.github/workflows/deploy_open5gs.yml

@@ -0,0 +1,21 @@
+name: Deploy Open5GS To Fly.io
+
+on:
+  push:
+    branches:
+      - main
+  jobs:
+    deploy:
+      runs-on: ubuntu-latest
+
+      steps:
+        - name: Checkout Repository
+          uses: actions/checkout@v2
+        - name: Install Flyctl
+          run: curl -L https://fly.io/install.sh | sh
+        - name: Automate Deployment
+          run: |
+            flyctl launch --auto-confirm --image open5gs/open5gs:latest
+          env:
+            FLY_APP_NAME: AstraLink_OPEN_5GS
+            FLY_ENV_NAME: production