Try to auto build caddy container and add zerossl

.github/workflows/docker-caddy.yml

@@ -0,0 +1,32 @@
+name: Docker Image CI Caddy
+
+on:
+  push:
+    branches: [ "master" ]
+    paths:
+      - 'update_caddyfile.sh'
+      - 'Dockerfile-caddy'
+
+jobs:
+  build-server:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+    - name: Docker Login
+      uses: docker/login-action@v3.2.0
+      with:
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_PASSWORD }}
+    - name: Build and push Server
+      uses: docker/build-push-action@v6.1.0
+      with:
+        context: .
+        platforms: linux/amd64,linux/arm64
+        file: Dockerfile-caddy
+        push: true
+        tags: gstein17/roboscapesim-rs-caddy:latest
+

Caddyfile.template

@@ -1,3 +1,7 @@
+{
+        cert_issuer zerossl ZEROSSL_API_KEY
+}
+
 DASH_IP.roboscapeonlineservers.netsblox.org {
         reverse_proxy :15000
 }

update_caddyfile.sh

@@ -2,3 +2,4 @@ DASH_IP="`curl -s http://checkip.amazonaws.com | cut -d " " -f 2 | tr . -`"
 
 cp Caddyfile.template Caddyfile
 sed -i -e  "s/DASH_IP/$DASH_IP/g" Caddyfile
+sed -i -e  "s/ZEROSSL_API_KEY/$ZEROSSL_API_KEY/g" Caddyfile