Update shim to build using bazel.

The go.mod dependency tree for the shim was somehow contradictory. After
resolving these issues (e.g. explicitly imported k8s 1.14, pulling a
specific dbus version), and adding all dependencies, the shim can now be
build as part of the regular bazel tree.

As part of this process, minor cleanup was done in all the source files:
headers were standardized (and include "The gVisor Authors" in addition
to the "The containerd Authors" if originally derived from containerd
sources), and comments were cleaned up to meet coding standards.

This change makes the containerd installation dynamic, so that multiple
versions can be tested, and drops the static installer for the VM image
itself.

This change also updates test/root/crictl_test.go and related utilities,
so that the containerd tests can be run on any version (and in cases
where it applies, they can be run on both v1 and v2 as parameterized
tests).

2 files changed, 16 insertions, 5 deletions

diff --git a/runsc/BUILD b/runsc/BUILD
index 757f6d44c..96f697a5f 100644
--- a/runsc/BUILD
+++ b/runsc/BUILD
@@ -62,18 +62,22 @@ go_binary(
 )
 
 pkg_tar(
-    name = "runsc-bin",
-    srcs = [":runsc"],
+    name = "debian-bin",
+    srcs = [
+        ":runsc",
+        "//shim/v1:gvisor-containerd-shim",
+        "//shim/v2:containerd-shim-runsc-v1",
+    ],
     mode = "0755",
     package_dir = "/usr/bin",
-    strip_prefix = "/runsc/linux_amd64_pure_stripped",
 )
 
 pkg_tar(
     name = "debian-data",
     extension = "tar.gz",
     deps = [
-        ":runsc-bin",
+        ":debian-bin",
+        "//shim:config",
     ],
 )
 
diff --git a/runsc/debian/postinst.sh b/runsc/debian/postinst.sh
index dc7aeee87..d1e28e17b 100755
--- a/runsc/debian/postinst.sh
+++ b/runsc/debian/postinst.sh
@@ -18,7 +18,14 @@ if [ "$1" != configure ]; then
   exit 0
 fi
 
+# Update docker configuration.
 if [ -f /etc/docker/daemon.json ]; then
   runsc install
-  systemctl restart docker || echo "unable to restart docker; you must do so manually." >&2
+  if systemctl status docker 2>/dev/null; then
+    systemctl restart docker || echo "unable to restart docker; you must do so manually." >&2
+  fi
 fi
+
+# For containerd-based installers, we don't automatically update the
+# configuration. If it uses a v2 shim, then it will find the package binaries
+# automatically when provided the appropriate annotation.