bake: git auth support for remote definitions

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

tests/bake.go

@@ -29,6 +29,7 @@ var bakeTests = []func(t *testing.T, sb integration.Sandbox){
 	testBakeLocal,
 	testBakeLocalMulti,
 	testBakeRemote,
+	testBakeRemoteAuth,
 	testBakeRemoteCmdContext,
 	testBakeRemoteLocalOverride,
 	testBakeLocalCwdOverride,
@@ -144,6 +145,41 @@ EOT
 	require.FileExists(t, filepath.Join(dirDest, "foo"))
 }
 
+func testBakeRemoteAuth(t *testing.T, sb integration.Sandbox) {
+	bakefile := []byte(`
+target "default" {
+	dockerfile-inline = <<EOT
+FROM scratch
+COPY foo /foo
+EOT
+}
+`)
+	dir := tmpdir(
+		t,
+		fstest.CreateFile("docker-bake.hcl", bakefile, 0600),
+		fstest.CreateFile("foo", []byte("foo"), 0600),
+	)
+	dirDest := t.TempDir()
+
+	git, err := gitutil.New(gitutil.WithWorkingDir(dir))
+	require.NoError(t, err)
+
+	gitutil.GitInit(git, t)
+	gitutil.GitAdd(git, t, "docker-bake.hcl", "foo")
+	gitutil.GitCommit(git, t, "initial commit")
+
+	token := identity.NewID()
+	addr := gitutil.GitServeHTTP(git, t, gitutil.WithAccessToken(token))
+
+	out, err := bakeCmd(sb, withDir(dir),
+		withEnv("BUILDX_BAKE_GIT_AUTH_TOKEN="+token),
+		withArgs(addr, "--set", "*.output=type=local,dest="+dirDest),
+	)
+	require.NoError(t, err, out)
+
+	require.FileExists(t, filepath.Join(dirDest, "foo"))
+}
+
 func testBakeRemoteLocalOverride(t *testing.T, sb integration.Sandbox) {
 	remoteBakefile := []byte(`
 target "default" {