diff --git a/app/package.json b/app/package.json
index 13579be4..449bd22d 100644
--- a/app/package.json
+++ b/app/package.json
@@ -8,7 +8,7 @@
     "start": "BROWSER=none react-scripts start",
     "develop": "REACT_APP_USE_SAMPLE_DATA=true yarn start",
     "build": "react-scripts build",
-    "postbuild": "git restore build/.gitkeep",
+    "postbuild": "git restore build/.gitkeep 2>/dev/null || printf '# Keep directory in git.\\n' > build/.gitkeep",
     "test": "react-scripts test --env=jest-environment-jsdom --transformIgnorePatterns \"node_modules/(?!d3)/\"",
     "test:ci": "cross-env CI=true yarn test --coverage",
     "eject": "react-scripts eject",
diff --git a/docs/release-notes/release-notes-0.17.0.md b/docs/release-notes/release-notes-0.17.0.md
index e1ee8f90..7c109a1b 100644
--- a/docs/release-notes/release-notes-0.17.0.md
+++ b/docs/release-notes/release-notes-0.17.0.md
@@ -16,6 +16,12 @@
 
 ### Bug Fixes
 
+* [Fix `dev.Dockerfile` build failure on git
+  worktree checkouts](https://github.com/lightninglabs/lightning-terminal/pull/1311):
+  The web UI `postbuild` step no longer aborts when the build context lacks a
+  reachable git directory, which previously broke `dev.Dockerfile` builds for
+  contributors using `git worktree`.
+
 * [Restore LNC session setup for mailbox
   links](https://github.com/lightninglabs/lightning-terminal/pull/1254):
   Mailbox-specific TLS transport credentials now allow mailbox links to proceed