Bump github.com/docker/docker to latest release (#1866)

* Bump github.com/docker/docker to latest release

* Pin deps to docker/docker's requirements

fix build breakages
fix unit test
Trying to see whether am-i-in-a-container checks are broken for integration tests...

vendor/github.com/moby/buildkit/util/stack/stack.proto

@@ -0,0 +1,17 @@
+syntax = "proto3";
+
+package stack;
+
+message Stack {
+    repeated Frame frames = 1;
+    repeated string cmdline = 2;
+    int32 pid = 3;
+    string version = 4;
+    string revision = 5;
+}
+
+message Frame {
+    string Name = 1;
+    string File = 2;
+    int32 Line = 3;
+}