cluster/identd: implement

This implements the main identd service that will run on our production
hosts. It's comparatively small, as most of the functionality is
implemented in //cluster/identd/ident and //cluster/identd/kubenat.

Change-Id: I1861fe7c93d105faa19a2bafbe9c85fe36502f73
diff --git a/cluster/identd/BUILD.bazel b/cluster/identd/BUILD.bazel
new file mode 100644
index 0000000..c49293f
--- /dev/null
+++ b/cluster/identd/BUILD.bazel
@@ -0,0 +1,48 @@
+load("@io_bazel_rules_docker//container:container.bzl", "container_image", "container_layer", "container_push")
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["main.go"],
+    importpath = "code.hackerspace.pl/hscloud/cluster/identd",
+    visibility = ["//visibility:private"],
+    deps = [
+        "//cluster/identd/ident:go_default_library",
+        "//cluster/identd/kubenat:go_default_library",
+        "//go/mirko:go_default_library",
+        "@com_github_golang_glog//:go_default_library",
+        "@io_k8s_apimachinery//pkg/apis/meta/v1:go_default_library",
+    ],
+)
+
+go_binary(
+    name = "identd",
+    embed = [":go_default_library"],
+    visibility = ["//visibility:public"],
+)
+
+container_layer(
+    name = "layer_bin",
+    files = [
+        ":identd",
+    ],
+    directory = "/cluster/identd/",
+)
+
+container_image(
+    name = "runtime",
+    base = "@prodimage-bionic//image",
+    layers = [
+        ":layer_bin",
+    ],
+    entrypoint = "/cluster/identd/identd",
+)
+
+container_push(
+    name = "push",
+    image = ":runtime",
+    format = "Docker",
+    registry = "registry.k0.hswaw.net",
+    repository = "q3k/identd",
+    tag = "{BUILD_TIMESTAMP}-{STABLE_GIT_COMMIT}",
+)