Override network mtu value

Author: aledbf

pkg/compose/create.go

@@ -1038,6 +1038,15 @@ func (s *composeService) ensureNetwork(ctx context.Context, n types.NetworkConfi
 				EnableIPv6: n.EnableIPv6,
 			}
 
+			// override MTU value and set custom MTU one.
+			// This is required for gitpod.io due to the veth change
+			// https://github.com/gitpod-io/gitpod/pull/8955
+			if createOpts.Options == nil {
+				createOpts.Options = make(map[string]string)
+			}
+
+			createOpts.Options["com.docker.network.driver.mtu"] = "1440"
+
 			if n.Ipam.Driver != "" || len(n.Ipam.Config) > 0 {
 				createOpts.IPAM = &network.IPAM{}
 			}