Mention DELETE in readme and dockerfile

Dockerfile

@@ -19,6 +19,7 @@ ENV ALLOW_RESTARTS=0 \
     PING=1 \
     PLUGINS=0 \
     POST=0 \
+    DELETE=0 \
     SECRETS=0 \
     SERVICES=0 \
     SESSION=0 \

README.md

@@ -115,7 +115,8 @@ by default. Maximum caution when enabling these.
 - `AUTH`
 - `SECRETS`
 - `POST`: When disabled, only `GET` and `HEAD` operations are allowed, meaning
-  any section of the API is read-only.
+  any section of the API is read-only. Note that this is a global 
+- `DELETE`: Enables or disables all `DELETE` operations
 
 #### Not always needed
 

haproxy.cfg

@@ -28,13 +28,13 @@ defaults
     load-server-state-from-file global
 
     # Use provided example error pages
-    # errorfile 400 /usr/local/etc/haproxy/errors/400.http
-    # errorfile 403 /usr/local/etc/haproxy/errors/403.http
-    # errorfile 408 /usr/local/etc/haproxy/errors/408.http
-    # errorfile 500 /usr/local/etc/haproxy/errors/500.http
-    # errorfile 502 /usr/local/etc/haproxy/errors/502.http
-    # errorfile 503 /usr/local/etc/haproxy/errors/503.http
-    # errorfile 504 /usr/local/etc/haproxy/errors/504.http
+    errorfile 400 /usr/local/etc/haproxy/errors/400.http
+    errorfile 403 /usr/local/etc/haproxy/errors/403.http
+    errorfile 408 /usr/local/etc/haproxy/errors/408.http
+    errorfile 500 /usr/local/etc/haproxy/errors/500.http
+    errorfile 502 /usr/local/etc/haproxy/errors/502.http
+    errorfile 503 /usr/local/etc/haproxy/errors/503.http
+    errorfile 504 /usr/local/etc/haproxy/errors/504.http
 
 backend dockerbackend
     server dockersocket /var/run/docker.sock