diff --git a/docs/deployment/docker.md b/docs/deployment/docker.md
index 1cd351c2bc..04a509d316 100644
--- a/docs/deployment/docker.md
+++ b/docs/deployment/docker.md
@@ -69,6 +69,10 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
 
 # From here on we use the least-privileged `node` user to run the backend.
 USER node
+
+# This should create the app dir as `node`.
+# If it is instead created as `root` then the `tar` command below will fail: `can't create directory 'packages/': Permission denied`.
+# If this occurs, then ensure BuildKit is enabled (`DOCKER_BUILDKIT=1`) so the app dir is correctly created as `node`.
 WORKDIR /app
 
 # This switches many Node.js dependencies to production mode.
@@ -206,6 +210,10 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
 
 # From here on we use the least-privileged `node` user to run the backend.
 USER node
+
+# This should create the app dir as `node`.
+# If it is instead created as `root` then the `tar` command below will fail: `can't create directory 'packages/': Permission denied`.
+# If this occurs, then ensure BuildKit is enabled (`DOCKER_BUILDKIT=1`) so the app dir is correctly created as `node`.
 WORKDIR /app
 
 # Copy the install dependencies from the build stage and context
diff --git a/packages/create-app/templates/default-app/packages/backend/Dockerfile b/packages/create-app/templates/default-app/packages/backend/Dockerfile
index 3e9ca5ba48..f0be3ac1d3 100644
--- a/packages/create-app/templates/default-app/packages/backend/Dockerfile
+++ b/packages/create-app/templates/default-app/packages/backend/Dockerfile
@@ -21,6 +21,10 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
 
 # From here on we use the least-privileged `node` user to run the backend.
 USER node
+
+# This should create the app dir as `node`.
+# If it is instead created as `root` then the `tar` command below will fail: `can't create directory 'packages/': Permission denied`.
+# If this occurs, then ensure BuildKit is enabled (`DOCKER_BUILDKIT=1`) so the app dir is correctly created as `node`.
 WORKDIR /app
 
 # This switches many Node.js dependencies to production mode.