eh22-wiki: setup EH22 wiki using Ansible by copying and mod. wiki config

Also introduce wiki_hosts group for applying dokuwiki role to multiple
hosts.

resources/chaosknoten/eh22-wiki/nginx/eh22.easterhegg.eu.conf

@@ -0,0 +1,66 @@
+# partly generated 2022-01-08, Mozilla Guideline v5.6, nginx 1.17.7, OpenSSL 1.1.1k, intermediate configuration
+# https://ssl-config.mozilla.org/#server=nginx&version=1.17.7&config=intermediate&openssl=1.1.1k&guideline=5.6
+server {
+    # Listen on a custom port for the proxy protocol.
+    listen 8443 ssl http2 proxy_protocol;
+    # Make use of the ngx_http_realip_module to set the $remote_addr and
+    # $remote_port to the client address and client port, when using proxy
+    # protocol.
+    # First set our proxy protocol proxy as trusted.
+    set_real_ip_from 172.31.17.140;
+    # Then tell the realip_module to get the addreses from the proxy protocol
+    # header.
+    real_ip_header proxy_protocol;
+
+    server_name eh22.easterhegg.eu;
+
+    ssl_certificate /etc/letsencrypt/live/eh22.easterhegg.eu/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/eh22.easterhegg.eu/privkey.pem;
+    # verify chain of trust of OCSP response using Root CA and Intermediate certs
+    ssl_trusted_certificate /etc/letsencrypt/live/eh22.easterhegg.eu/chain.pem;
+
+    # HSTS (ngx_http_headers_module is required) (63072000 seconds)
+    add_header Strict-Transport-Security "max-age=63072000" always;
+
+    # Maximum file upload size is 20MB - change accordingly if needed
+    # See: https://www.dokuwiki.org/faq:uploadsize
+    client_max_body_size 20M;
+    client_body_buffer_size 128k;
+
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    # This is https in any case.
+    proxy_set_header X-Forwarded-Proto https;
+
+    root /var/www/dokuwiki;
+    index doku.php;
+
+    #Remember to comment the below out when you're installing, and uncomment it when done.
+    location ~ /(conf/|bin/|inc/|vendor/|install.php) { deny all; }
+
+    #Support for X-Accel-Redirect
+    location ~ ^/data/ { internal ; }
+
+    location ~ ^/lib.*\.(js|css|gif|png|ico|jpg|jpeg)$ {
+        expires 365d;
+    }
+
+    location / { try_files $uri $uri/ @dokuwiki; }
+
+    location @dokuwiki {
+        # rewrites "doku.php/" out of the URLs if you set the userwrite setting to .htaccess in dokuwiki config page
+        rewrite ^/_media/(.*) /lib/exe/fetch.php?media=$1 last;
+        rewrite ^/_detail/(.*) /lib/exe/detail.php?media=$1 last;
+        rewrite ^/_export/([^/]+)/(.*) /doku.php?do=export_$1&id=$2 last;
+        rewrite ^/(.*) /doku.php?id=$1&$args last;
+    }
+
+    location ~ \.php$ {
+        try_files $uri $uri/ /doku.php;
+        include fastcgi_params;
+        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+        fastcgi_param REDIRECT_STATUS 200;
+        fastcgi_pass unix:/var/run/php/php-fpm-dokuwiki.sock;
+    }
+}