Cleanups: use bazelignore (#235)

Update to Bazel 0.19

Author: alexeagle

.bazelignore

@@ -0,0 +1 @@
+node_modules

.circleci/config.yml

@@ -4,7 +4,7 @@
 # We use a docker image as the basis for our build, so that all the toolchains we use
 # are already installed and the build can start running right away. It also guarantees
 # the environment is portable and reproducible on your local machine.
-var_1: &docker_image angular/ngcontainer:0.7.0
+var_1: &docker_image angular/ngcontainer:0.8.0
 
 # CircleCI lets us pick the key for storing one or more caches, to speed up subsequent builds.
 # We can use this to avoid re-fetching our dependencies from npm on every build.
@@ -13,7 +13,7 @@ var_1: &docker_image angular/ngcontainer:0.7.0
 # - the branch we are on, which really shouldn't be needed since the yarn lock file should be hermetic
 # - the docker image tag, working around an issue we saw where changing docker images causes permission
 #   errors when restoring the cache, like when the user we run as changes
-var_2: &cache_key angular-{{ .Branch }}-{{ checksum "yarn.lock" }}-0.7.0
+var_2: &cache_key angular-{{ .Branch }}-{{ checksum "yarn.lock" }}-0.8.0
 
 # Each job will inherit these defaults
 anchor_1: &job_defaults

BUILD.bazel

@@ -1,10 +1,5 @@
 package(default_visibility = ["//visibility:public"])
 
-alias(
-    name = "install",
-    actual = "@nodejs//:yarn",
-)
-
 # ts_library and ng_module use the `//:tsconfig.json` target
 # by default. This alias allows omitting explicit tsconfig
 # attribute.

WORKSPACE

@@ -50,14 +50,6 @@ http_archive(
     strip_prefix = "rules_sass-1.14.1",
 )
 
-# This local_repository rule is needed to prevent `bazel build ...` from
-# drilling down into the @rxjs workspace BUILD files in node_modules/rxjs/src.
-# In the future this will no longer be needed.
-local_repository(
-    name = "ignore_node_modules_rxjs",
-    path = "node_modules/rxjs/src",
-)
-
 ####################################
 # Load and install our dependencies downloaded above.
 
@@ -67,8 +59,10 @@ rules_angular_dependencies()
 
 load("@build_bazel_rules_nodejs//:defs.bzl", "check_bazel_version", "node_repositories", "yarn_install")
 
-# The minimum bazel version to use with this example repo is 0.17.1
-check_bazel_version("0.17.1")
+# The minimum bazel version to use with this example repo
+# Bazel 0.19 supports the .bazelignore file
+check_bazel_version("0.19.0")
+
 node_repositories(
     node_version = "10.9.0",
     yarn_version = "1.9.2",