remove uses of github.com/docker/docker/pkg/ioutils ReadCloserWrapper

It was the only utility we consumed from the package, and it's trivial
to implement, so let's create local copies of it.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

cli/command/container/hijack.go

@@ -9,7 +9,6 @@ import (
 
 	"github.com/docker/cli/cli/command"
 	"github.com/docker/docker/api/types"
-	"github.com/docker/docker/pkg/ioutils"
 	"github.com/docker/docker/pkg/stdcopy"
 	"github.com/moby/term"
 	"github.com/sirupsen/logrus"
@@ -19,6 +18,18 @@ import (
 // TODO: This could be moved to `pkg/term`.
 var defaultEscapeKeys = []byte{16, 17}
 
+// readCloserWrapper wraps an io.Reader, and implements an io.ReadCloser
+// It calls the given callback function when closed.
+type readCloserWrapper struct {
+	io.Reader
+	closer func() error
+}
+
+// Close calls back the passed closer function
+func (r *readCloserWrapper) Close() error {
+	return r.closer()
+}
+
 // A hijackedIOStreamer handles copying input to and output from streams to the
 // connection.
 type hijackedIOStreamer struct {
@@ -100,7 +111,10 @@ func (h *hijackedIOStreamer) setupInput() (restore func(), err error) {
 		}
 	}
 
-	h.inputStream = ioutils.NewReadCloserWrapper(term.NewEscapeProxy(h.inputStream, escapeKeys), h.inputStream.Close)
+	h.inputStream = &readCloserWrapper{
+		Reader: term.NewEscapeProxy(h.inputStream, escapeKeys),
+		closer: h.inputStream.Close,
+	}
 
 	return restore, nil
 }

cli/command/image/build/context.go

@@ -15,7 +15,6 @@ import (
 	"time"
 
 	"github.com/docker/docker/builder/remotecontext/git"
-	"github.com/docker/docker/pkg/ioutils"
 	"github.com/docker/docker/pkg/progress"
 	"github.com/docker/docker/pkg/streamformatter"
 	"github.com/docker/docker/pkg/stringid"
@@ -108,7 +107,7 @@ func DetectArchiveReader(input io.ReadCloser) (rc io.ReadCloser, isArchive bool,
 		return nil, false, errors.Errorf("failed to peek context header from STDIN: %v", err)
 	}
 
-	return ioutils.NewReadCloserWrapper(buf, func() error { return input.Close() }), IsArchive(magic), nil
+	return newReadCloserWrapper(buf, func() error { return input.Close() }), IsArchive(magic), nil
 }
 
 // WriteTempDockerfile writes a Dockerfile stream to a temporary file with a
@@ -169,7 +168,7 @@ func GetContextFromReader(rc io.ReadCloser, dockerfileName string) (out io.ReadC
 		return nil, "", err
 	}
 
-	return ioutils.NewReadCloserWrapper(tarArchive, func() error {
+	return newReadCloserWrapper(tarArchive, func() error {
 		err := tarArchive.Close()
 		os.RemoveAll(dockerfileDir)
 		return err
@@ -227,7 +226,7 @@ func GetContextFromURL(out io.Writer, remoteURL, dockerfileName string) (io.Read
 	// Pass the response body through a progress reader.
 	progReader := progress.NewProgressReader(response.Body, progressOutput, response.ContentLength, "", "Downloading build context from remote url: "+remoteURL)
 
-	return GetContextFromReader(ioutils.NewReadCloserWrapper(progReader, func() error { return response.Body.Close() }), dockerfileName)
+	return GetContextFromReader(newReadCloserWrapper(progReader, func() error { return response.Body.Close() }), dockerfileName)
 }
 
 // getWithStatusError does an http.Get() and returns an error if the
@@ -444,3 +443,25 @@ func Compress(buildCtx io.ReadCloser) (io.ReadCloser, error) {
 
 	return pipeReader, nil
 }
+
+// readCloserWrapper wraps an io.Reader, and implements an io.ReadCloser
+// It calls the given callback function when closed. It should be constructed
+// with [newReadCloserWrapper].
+type readCloserWrapper struct {
+	io.Reader
+	closer func() error
+}
+
+// Close calls back the passed closer function
+func (r *readCloserWrapper) Close() error {
+	return r.closer()
+}
+
+// newReadCloserWrapper wraps an io.Reader, and implements an io.ReadCloser.
+// It calls the given callback function when closed.
+func newReadCloserWrapper(r io.Reader, closer func() error) io.ReadCloser {
+	return &readCloserWrapper{
+		Reader: r,
+		closer: closer,
+	}
+}