⚙️ Add ability to build from Dockerfiles directly

vendor/github.com/moby/term/tc.go

@@ -1,20 +1,19 @@
 // +build !windows
 
-package term // import "github.com/moby/term"
+package term
 
 import (
-	"syscall"
-	"unsafe"
-
 	"golang.org/x/sys/unix"
 )
 
-func tcget(fd uintptr, p *Termios) syscall.Errno {
-	_, _, err := unix.Syscall(unix.SYS_IOCTL, fd, uintptr(getTermios), uintptr(unsafe.Pointer(p)))
-	return err
+func tcget(fd uintptr) (*Termios, error) {
+	p, err := unix.IoctlGetTermios(int(fd), getTermios)
+	if err != nil {
+		return nil, err
+	}
+	return p, nil
 }
 
-func tcset(fd uintptr, p *Termios) syscall.Errno {
-	_, _, err := unix.Syscall(unix.SYS_IOCTL, fd, setTermios, uintptr(unsafe.Pointer(p)))
-	return err
+func tcset(fd uintptr, p *Termios) error {
+	return unix.IoctlSetTermios(int(fd), setTermios, p)
 }