docs: add reverse-proxy example config, fix outpost docker-compose

docs/installation/reverse-proxy.md

@@ -0,0 +1,42 @@
+# passbook behind a reverse-proxy
+
+If you want to access passbook behind a reverse-proxy, use a config like this. It is important that Websocket is enabled, so that Outposts can connect.
+
+```
+map $http_upgrade $connection_upgrade {
+    default upgrade;
+    ''      close;
+}
+
+server {
+    # Server config
+    listen 80;
+    server_name sso.domain.tld;
+
+    # 301 to SSL
+    location / {
+            return 301 https://$host$request_uri;
+    }
+}
+server {
+    # Server config
+    listen 443 ssl http2;
+    server_name sso.domain.tld;
+
+    # SSL Certs
+    ssl_certificate /etc/letsencrypt/live/domain.tld/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/domain.tld/privkey.pem;
+
+    # Proxy site
+    location / {
+        proxy_pass https://<hostname of your passbook server>;
+        proxy_http_version 1.1;
+        proxy_set_header X-Forwarded-Proto https;
+        proxy_set_header X-Forwarded-Port 443;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header Host $http_host;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection $connection_upgrade;
+    }
+}
+```

docs/outposts/deploy-docker-compose.md

@@ -5,7 +5,7 @@ To deploy an outpost with docker-compose, use  this snippet in your docker-compo
 You can also run the outpost in a separate docker-compose project, you just have to ensure that the outpost container can reach your application container.
 
 ```yaml
-version: 3.5
+version: '3.5'
 
 services:
   passbook_proxy:

mkdocs.yml

@@ -8,6 +8,7 @@ nav:
   - Installation:
     - docker-compose: installation/docker-compose.md
     - Kubernetes: installation/kubernetes.md
+    - Reverse Proxy: installation/reverse-proxy.md
   - Flows:
       Overview: flow/flows.md
       Examples: flow/examples/examples.md