Merge branch v2.3 into master.

pkg/provider/docker/docker.go

@@ -2,6 +2,7 @@ package docker
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"net"
@@ -310,7 +311,7 @@ func (p *Provider) Provide(configurationChan chan<- dynamic.Message, pool *safe.
 								startStopHandle(event)
 							}
 						case err := <-errc:
-							if err == io.EOF {
+							if errors.Is(err, io.EOF) {
 								logger.Debug("Provider event stream closed")
 							}
 							return err