diff --git a/metadata/org.mozilla.rocket.yml b/metadata/org.mozilla.rocket.yml
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@@ -0,0 +1,57 @@
+AntiFeatures:
+  - Tracking
+Categories:
+  - Internet
+License: MPL-2.0
+SourceCode: https://github.com/mozilla-tw/FirefoxLite
+IssueTracker: https://github.com/mozilla-tw/FirefoxLite/issues
+
+Summary: Fast and Lightweight Web Browser
+Description: Firefox Lite is a light but feature-packed browser that lets you save
+    data and phone storage, capture and share content, and browse quickly even on
+    slow connections.
+
+RepoType: git
+Repo: https://github.com/mozilla-tw/FirefoxLite
+
+Builds:
+  - versionName: 1.2.1
+    versionCode: 1
+    commit: v1.2.1
+    subdir: app/
+    submodules: true
+    gradle:
+      - focus
+      - webkit
+    rm:
+      - third_party/glide/annotation/compiler/libs/jarjar-1.4.jar
+      - ktlint
+    prebuild:
+      - sed -i -e '/maven {/,+2d' ../build.gradle
+      - sed -i -e '/play-services-analytics/d' -e '/sb.append/,+1d' -e 's/\["firebase"\]/\["firebase_no_op"\]/'
+        -e 's/browser-session/session/' -e 's/service-telemetry/telemetry/' -e 's/browser-domains/domains/'
+        -e 's/ui-autocomplete/autocomplete/' -e 's/Versions.version_code/$$VERCODE$$/'
+        build.gradle
+      - sed -i -e 's/browser-session/session/' ../components/feature/tabs/build.gradle
+      - sed -i -e 's/isBetaBuild() || isReleaseBuild() || isFirebaseBuild()/false/'
+        src/main/java/org/mozilla/focus/utils/AppConstants.java
+      - cp src/debug/java/org/mozilla/focus/utils/AdjustHelper.java src/release/java/org/mozilla/focus/utils/AdjustHelper.java
+    scanignore:
+      - app/build.gradle
+    scandelete:
+      - buildSrc/build/
+      - buildSrc/.gradle/
+
+MaintainerNotes: |-
+    We have to use scanignore because "project(':firebase')" triggers a false positive. (But the flavor we build does not actually contain Firebase.)
+
+    The Tracking anti-feature is there because data collection is enabled by default.
+
+    Release builds crash when they don't have Firebase and Adjust keys so we have to patch the AppConstants and AdjustHelper classes in order to avoid that.
+
+    Upstream seems to always use a version code of 1, so we need to force it.
+
+AutoUpdateMode: None
+UpdateCheckMode: None
+CurrentVersion: 1.2.1
+CurrentVersionCode: 1