update README for 0.14.0 (#1376)

Author: nlopezgi

README.md

@@ -114,12 +114,12 @@ Add the following to your `WORKSPACE` file to add the external repositories:
 ```python
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
-# Download the rules_docker repository at release v0.13.0
+# Download the rules_docker repository at release v0.14.0
 http_archive(
     name = "io_bazel_rules_docker",
-    sha256 = "df13123c44b4a4ff2c2f337b906763879d94871d16411bf82dcfeba892b58607",
-    strip_prefix = "rules_docker-0.13.0",
-    urls = ["https://github.com/bazelbuild/rules_docker/releases/download/v0.13.0/rules_docker-v0.13.0.tar.gz"],
+    sha256 = "09604a0f544f544df1a3c335ef012d4f24b1c158aff8e8c00a9087e1f41a2869",
+    strip_prefix = "rules_docker-0.14.0",
+    urls = ["https://github.com/bazelbuild/rules_docker/releases/download/v0.14.0/rules_docker-v0.14.0.tar.gz"],
 )
 
 # OPTIONAL: Call this to override the default docker toolchain configuration.