message: Increase client_body_buffer_size for rpc-proxy
  Added client_max_body_size to rpc-proxy config
diff: @@ -11,6 +11,15 @@ events {
  http {
  include mime.types;
  index index.html;
  + # The JSONRPC POST body must fit inside this allocation for the method parsing to succeed.
  + # https://github.com/openresty/lua-nginx-module#ngxreqread_body
  + # http://nginx.org/en/docs/http/ngx_http_core_module.html#client_body_buffer_size
  + client_body_buffer_size 128k;
  + # client_max_body_size should match client_body_buffer_size
  + # Values that exceed client_body_buffer_size will be written to a temporary file, which we don't want
  + # Requests above this limit will also be denied with an HTTP 413 response (entity too large)
  + # http://nginx.org/en/docs/http/ngx_http_core_module.html#client_max_body_size
  + client_max_body_size 128k;
  # See Move default writable paths to a dedicated directory (#119)
  # https://github.com/openresty/docker-openresty/issues/119
  