diff --git a/lib/build.js b/lib/build.js
index 66ec33fd..843ab9e4 100644
--- a/lib/build.js
+++ b/lib/build.js
@@ -16,6 +16,17 @@ function getBabelTarget(envConfig) {
 function webpackConfig(dir, additionalConfig) {
   var config = conf.load();
   var envConfig = config.build.environment || config.build.Environment || {};
+
+  var action = process.env.CONTEXT;
+  var build = config.build || {};
+  var context = config.context || {};
+  var overrides = context[action] || {};
+
+  var envConfig = Object.assign(
+    {},
+    build.environment || build.Environment || {},
+    overrides.environment || overrides.Environment || {},
+  );
   var babelOpts = { cacheDirectory: true };
   if (!fs.existsSync(path.join(process.cwd(), ".babelrc"))) {
     babelOpts.presets = [