Bump github.com/docker/docker

Bumps [github.com/docker/docker](https://github.com/docker/docker) from 20.10.6+incompatible to 20.10.7+incompatible.
- [Release notes](https://github.com/docker/docker/releases)
- [Changelog](https://github.com/moby/moby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/docker/docker/compare/v20.10.6...v20.10.7)

---
updated-dependencies:
- dependency-name: github.com/docker/docker
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

4 files changed, 19 insertions, 4 deletions

diff --git a/go.mod b/go.mod
index e70e8f7c5..714f92405 100644
--- a/go.mod
+++ b/go.mod
@@ -25,7 +25,7 @@ require (
 	github.com/davecgh/go-spew v1.1.1
 	github.com/digitalocean/go-qemu v0.0.0-20210209191958-152a1535e49f
 	github.com/docker/distribution v2.7.1+incompatible
-	github.com/docker/docker v20.10.6+incompatible
+	github.com/docker/docker v20.10.7+incompatible
 	github.com/docker/go-connections v0.4.0
 	github.com/docker/go-plugins-helpers v0.0.0-20200102110956-c9a8a2d92ccc
 	github.com/docker/go-units v0.4.0
diff --git a/go.sum b/go.sum
index a48097b5b..99b82b8b5 100644
--- a/go.sum
+++ b/go.sum
@@ -295,8 +295,9 @@ github.com/docker/distribution v2.7.1+incompatible h1:a5mlkVzth6W5A4fOsS3D2EO5BU
 github.com/docker/distribution v2.7.1+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
 github.com/docker/docker v1.4.2-0.20191219165747-a9416c67da9f/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/docker v20.10.3-0.20210216175712-646072ed6524+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
-github.com/docker/docker v20.10.6+incompatible h1:oXI3Vas8TI8Eu/EjH4srKHJBVqraSzJybhxY7Om9faQ=
 github.com/docker/docker v20.10.6+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/docker v20.10.7+incompatible h1:Z6O9Nhsjv+ayUEeI1IojKbYcsGdgYSNqxe1s2MYzUhQ=
+github.com/docker/docker v20.10.7+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/docker-credential-helpers v0.6.3 h1:zI2p9+1NQYdnG6sMU26EX4aVGlqbInSQxQXLvzJ4RPQ=
 github.com/docker/docker-credential-helpers v0.6.3/go.mod h1:WRaJzqw3CTB9bk10avuGsjVBZsD05qeibJ1/TYlvc0Y=
 github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ=
diff --git a/vendor/github.com/docker/docker/pkg/archive/archive.go b/vendor/github.com/docker/docker/pkg/archive/archive.go
index 8d14b7869..50b83c62c 100644
--- a/vendor/github.com/docker/docker/pkg/archive/archive.go
+++ b/vendor/github.com/docker/docker/pkg/archive/archive.go
@@ -402,10 +402,24 @@ func fillGo18FileTypeBits(mode int64, fi os.FileInfo) int64 {
 // ReadSecurityXattrToTarHeader reads security.capability xattr from filesystem
 // to a tar header
 func ReadSecurityXattrToTarHeader(path string, hdr *tar.Header) error {
+	const (
+		// Values based on linux/include/uapi/linux/capability.h
+		xattrCapsSz2    = 20
+		versionOffset   = 3
+		vfsCapRevision2 = 2
+		vfsCapRevision3 = 3
+	)
 	capability, _ := system.Lgetxattr(path, "security.capability")
 	if capability != nil {
+		length := len(capability)
+		if capability[versionOffset] == vfsCapRevision3 {
+			// Convert VFS_CAP_REVISION_3 to VFS_CAP_REVISION_2 as root UID makes no
+			// sense outside the user namespace the archive is built in.
+			capability[versionOffset] = vfsCapRevision2
+			length = xattrCapsSz2
+		}
 		hdr.Xattrs = make(map[string]string)
-		hdr.Xattrs["security.capability"] = string(capability)
+		hdr.Xattrs["security.capability"] = string(capability[:length])
 	}
 	return nil
 }
diff --git a/vendor/modules.txt b/vendor/modules.txt
index d0b65cbf5..aef3e5127 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -278,7 +278,7 @@ github.com/docker/distribution/registry/client/auth/challenge
 github.com/docker/distribution/registry/client/transport
 github.com/docker/distribution/registry/storage/cache
 github.com/docker/distribution/registry/storage/cache/memory
-# github.com/docker/docker v20.10.6+incompatible
+# github.com/docker/docker v20.10.7+incompatible
 github.com/docker/docker/api
 github.com/docker/docker/api/types
 github.com/docker/docker/api/types/blkiodev