Automatically use CI mode if CI env variable is present

README.md

@@ -119,6 +119,8 @@ npm run deploy-storybook -- --monorepo-index-generator my-custom-generator.js
 
 To deploy Storybook as part of a CI step, pass the `ci` flag to `npm run deploy-storybook`.
 
+If the `CI` environment variable is set then this mode will be assumed, therefore no need to specify the `ci` flag.
+
 Because pushing to GitHub as part of a CI step requires a [personal access token](https://github.com/blog/1509-personal-api-tokens), Storybook uses the `GH_TOKEN` environment variable, by default, to authenticate GitHub pushes.
 
 This environment variable name can be configured via the `host-token-env-variable` flag.
@@ -238,6 +240,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
 
 <!-- markdownlint-enable -->
 <!-- prettier-ignore-end -->
+
 <!-- ALL-CONTRIBUTORS-LIST:END -->
 
 This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!

src/parse-args.js

@@ -104,7 +104,7 @@ module.exports = packageJson => {
     PACKAGES_DIRECTORY: argv.packages,
     MONOREPO_INDEX_GENERATOR: argv['monorepo-index-generator'],
     NPM_SCRIPT: argv.script || 'build-storybook',
-    CI_DEPLOY: Boolean(argv.ci),
+    CI_DEPLOY: Boolean(argv.ci) || Boolean(process.env.CI),
     DRY_RUN: Boolean(argv.dryRun),
     // Git Variables
     GIT_REMOTE: argv.remote || 'origin',
@@ -115,6 +115,6 @@ module.exports = packageJson => {
     AWS_PROFILE: argv['aws-profile'] || 'default',
     BUCKET_PATH: argv['bucket-path'],
     S3_PATH: 's3://' + argv['bucket-path'],
-    S3_SYNC_OPTIONS: argv['s3-sync-options'],
+    S3_SYNC_OPTIONS: argv['s3-sync-options']
   };
 };