fix CVE-2021-20205 and examples update

examples/gogs/docker-compose.yml

@@ -0,0 +1,31 @@
+version: '3'
+
+services:
+
+  myreverse:
+    image: bunkerity/bunkerized-nginx
+    restart: always
+    ports:
+      - 80:8080
+      - 443:8443
+    volumes:
+      - ./letsencrypt:/etc/letsencrypt
+      - ./modsec-crs-confs:/modsec-crs-confs:ro              # fix FP with CRS
+    environment:
+      - SERVER_NAME=www.website.com                          # replace with your domain
+      - SERVE_FILES=no
+      - DISABLE_DEFAULT_SERVER=yes
+      - REDIRECT_HTTP_TO_HTTPS=yes
+      - AUTO_LETS_ENCRYPT=yes
+      - USE_PROXY_CACHE=yes
+      - USE_CLIENT_CACHE=yes
+      - USE_GZIP=yes
+      - USE_BROTLI=yes
+      - USE_REVERSE_PROXY=yes
+      - REVERSE_PROXY_URL=/
+      - REVERSE_PROXY_HOST=http://mygogs:3000/
+
+  mygogs:
+    image: gogs/gogs
+    volumes:
+      - ./data-gogs:/data

examples/gogs/modsec-crs-confs/gogs.conf

@@ -0,0 +1,7 @@
+SecAction \
+ "id:900220,\
+  phase:1,\
+  nolog,\
+  pass,\
+  t:none,\
+  setvar:'tx.allowed_request_content_type=|application/x-www-form-urlencoded| |multipart/form-data| |multipart/related| |text/xml| |application/xml| |application/soap+xml| |application/x-amf| |application/json| |application/cloudevents+json| |application/cloudevents-batch+json| |application/octet-stream| |application/csp-report| |application/xss-auditor-report| |text/plain| |application/x-git-upload-pack-request| |application/x-git-receive-pack-request|'"