Add kubernetes plugin to Codegen step

.buildkite/docs-docker-compose.yml

@@ -7,6 +7,7 @@ services:
     volumes:
       - ../:/go/src/github.com/m3db/m3
       - $SSH_AUTH_SOCK:/ssh-agent
+    working_dir: /go/src/github.com/m3db/m3
     environment:
       - CI
       - BUILDKITE

.buildkite/pipeline.yml

@@ -50,21 +50,19 @@ env:
   SKIP_CODECOV: "true"
 
 steps:
-#  - name: "Codegen"
-#    command: make clean install-vendor-m3 test-all-gen
-#    env:
-#      CGO_ENABLED: 0
-#      GIMME_GO_VERSION: 1.18.x
-#    plugins:
-#        gopath-checkout#v1.0.1:
-#          import: github.com/m3db/m3
-#    <<: *common
-  - name: "Unit %n"
-    parallelism: 4
+  - name: "Codegen"
+    env:
+      CGO_ENABLED: 0
+      GIMME_GO_VERSION: 1.18.x
     plugins:
-      docker-compose#v2.5.1:
-        run: app
-        workdir: /go/src/github.com/m3db/m3
+      gopath-checkout#v1.0.1:
+        import: github.com/m3db/m3
+#      docker#v3.0.1:
+#        image: us-west1-docker.pkg.dev/ci-compute/buildkite-images/buildkite-dind:v1
+#        always-pull: true
+#        volumes:
+#          - .:/go/src/github.com/m3db/m3
+#          - /var/run/docker.sock:/var/run/docker.sock
       kubernetes:
         <<: *kubernetes
         podSpec:
@@ -73,8 +71,24 @@ steps:
             - <<: *commandContainer
               command:
                 - |-
-                  make clean install-vendor-m3 test-base
+                  make clean install-vendor-m3 test-all-gen
     <<: *common
+#  - name: "Unit %n"
+#    parallelism: 4
+#    plugins:
+#      docker-compose#v2.5.1:
+#        run: app
+#        workdir: /go/src/github.com/m3db/m3
+#      kubernetes:
+#        <<: *kubernetes
+#        podSpec:
+#          <<: *podSpec
+#          containers:
+#            - <<: *commandContainer
+#              command:
+#                - |-
+#                  make clean install-vendor-m3 test-base
+#    <<: *common
 #  - name: "Big Unit %n"
 #    command: make clean install-vendor-m3 test-big-base
 #    parallelism: 2

docker-compose.yml

@@ -11,6 +11,7 @@ services:
       # Support running docker within docker. That is, buildkite jobs themselves run in a container; that container
       # needs to be able to spin up functioning docker containers.
       - /var/run/docker.sock:/var/run/docker.sock
+    working_dir: /go/src/github.com/m3db/m3
     extra_hosts:
       # Allow routing from the buildkite container to the host machine, as host.docker.internal. This allows us to do
       # the following: