diff --git a/Dockerfile b/Dockerfile
index 3baab38..2b43bdd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -25,6 +25,7 @@ COPY . .
 # would need a docker daemon inside the build. Keep these steps in step with
 # Dockerfile.lint, including --network=none (see its header for why).
 RUN make fmt-check
+RUN script/assets
 RUN --network=none golangci-lint config verify --config .golangci.yml
 RUN --network=none golangci-lint run --config .golangci.yml --build-tags browser ./...
 
diff --git a/Dockerfile.lint b/Dockerfile.lint
index 105ff08..621e692 100644
--- a/Dockerfile.lint
+++ b/Dockerfile.lint
@@ -31,6 +31,10 @@ FROM deps AS lint
 
 COPY . .
 
+# static/static.go embeds the Alpine.js file this extracts from 3p/; without
+# it the static package does not compile and cannot be linted.
+RUN script/assets
+
 # `run` silently ignores config keys it does not recognize, so a typo would
 # disable a setting without a word. `config verify` is what catches that.
 RUN --network=none golangci-lint config verify --config .golangci.yml
diff --git a/README.md b/README.md
index 2d18612..a7706e3 100644
--- a/README.md
+++ b/README.md
@@ -1348,7 +1348,9 @@ apply. The directory is `3p/` rather than `vendor/` because Go treats a root
 where `go:embed` picks it up. `script/test`, `make build` and `make dev` run
 it first, and the Dockerfile builds through `make test` and `make build`, so
 nothing downloads Alpine.js. The extracted file is not committed, and
-`.dockerignore` keeps any host copy out of the build context.
+`.dockerignore` keeps any host copy out of the build context. `static/static.go`
+names every file it embeds, so a build that skips the extraction, such as a
+bare `go build`, fails with an error naming `js/alpine.min.js`.
 
 To move to a new version: download
 `https://registry.npmjs.org/@alpinejs/csp/-/csp-<version>.tgz`, check it against
@@ -3379,8 +3381,9 @@ version is fixed independently of the compiler's:
 
 1. **Lint stage** (`golangci/golangci-lint:v2.12.2`, Debian-based) —
    installs `make`, downloads dependencies, copies the source, and runs
-   `make fmt-check`, then `golangci-lint config verify` and
-   `golangci-lint run`, both with `--network=none`.
+   `make fmt-check`, then `script/assets` to extract Alpine.js from
+   `3p/`, then `golangci-lint config verify` and `golangci-lint run`,
+   both with `--network=none`.
 2. **Builder stage** (`golang:1.26.1-bookworm`) — depends on the lint
    stage passing (it copies a file from it), runs `make test` and
    `make build` (both extract Alpine.js from `3p/` first), and finally
diff --git a/static/static.go b/static/static.go
index c3f75d1..43a0916 100644
--- a/static/static.go
+++ b/static/static.go
@@ -5,7 +5,10 @@ import (
 	"embed"
 )
 
-// Static holds the embedded CSS and JavaScript files for the web UI.
+// Static holds the CSS and JavaScript files the web UI's pages load. They
+// are named one by one so that a missing js/alpine.min.js, which make
+// assets extracts and git does not track, fails the build instead of
+// leaving the pages without Alpine.js.
 //
-//go:embed css js
+//go:embed css/tailwind.css css/style.css js/app.js js/alpine.min.js
 var Static embed.FS