Update deployment to single node swarm

ingress/Dockerfile

@@ -0,0 +1,3 @@
+FROM nginx:alpine
+
+COPY app.conf /etc/nginx/conf.d/

ingress/app.conf

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+server {
+    listen 80;
+    server_name decla.red;
+    server_tokens off;
+
+    location /.well-known/acme-challenge/ {
+        root /var/www/certbot;
+    }
+
+    location / {
+        return 301 https://$host$request_uri;
+    }
+}
+
+server {
+    listen 443 ssl;
+    server_name decla.red;
+    server_tokens off;
+
+    ssl_certificate /etc/letsencrypt/live/decla.red/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/decla.red/privkey.pem;
+    include /etc/letsencrypt/options-ssl-nginx.conf;
+    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
+    
+    location / {
+        proxy_pass  http://frontend;
+        proxy_set_header    Host                $http_host;
+        proxy_set_header    X-Real-IP           $remote_addr;
+        proxy_set_header    X-Forwarded-For     $proxy_add_x_forwarded_for;
+    }
+}