diff --git a/.containerignore b/.containerignore
index b4b14d1..1812091 100644
--- a/.containerignore
+++ b/.containerignore
@@ -11,3 +11,12 @@ storybook-static
 test-results
 .env
 .env.*
+apps/*/.turbo
+apps/*/build
+apps/*/data
+apps/*/dist
+apps/*/playwright-report
+apps/*/test-results
+packages/*/.turbo
+packages/*/dist
+packages/*/storybook-static
diff --git a/apps/web/package.json b/apps/web/package.json
index 2e9fef6..790663c 100644
--- a/apps/web/package.json
+++ b/apps/web/package.json
@@ -5,7 +5,7 @@
   "type": "module",
   "scripts": {
     "dev": "bun src/server/dev.ts",
-    "build": "vite build && bun build src/server/index.ts --target bun --outdir build",
+    "build": "rm -rf build && vite build && bun build src/server/index.ts --target bun --outdir build",
     "preview": "HOST=0.0.0.0 PORT=4173 bun build/index.js",
     "check": "tsc --noEmit",
     "test": "vitest run",
diff --git a/apps/web/src/lib/workspace-boundary.test.ts b/apps/web/src/lib/workspace-boundary.test.ts
index 9c056bf..9cde8e8 100644
--- a/apps/web/src/lib/workspace-boundary.test.ts
+++ b/apps/web/src/lib/workspace-boundary.test.ts
@@ -151,10 +151,35 @@ describe("workspace boundaries", () => {
   });
 
   test("keeps local turbo prune output out of git and container contexts", () => {
+    const webPackage = JSON.parse(
+      readFileSync(join(root, "apps/web/package.json"), "utf8"),
+    ) as { scripts?: Record<string, string> };
     const gitignore = readFileSync(join(root, ".gitignore"), "utf8");
     const containerignore = readFileSync(join(root, ".containerignore"), "utf8");
+    const containerIgnoreRules = new Set(
+      containerignore
+        .split(/\r?\n/)
+        .map((line) => line.trim())
+        .filter(Boolean),
+    );
 
     expect(gitignore).toContain("out/");
     expect(containerignore).toContain("out");
+    expect([...containerIgnoreRules]).toEqual(
+      expect.arrayContaining([
+        "apps/*/.turbo",
+        "apps/*/build",
+        "apps/*/data",
+        "apps/*/dist",
+        "apps/*/playwright-report",
+        "apps/*/test-results",
+        "packages/*/.turbo",
+        "packages/*/dist",
+        "packages/*/storybook-static",
+      ]),
+    );
+    expect(webPackage.scripts?.build).toBe(
+      "rm -rf build && vite build && bun build src/server/index.ts --target bun --outdir build",
+    );
   });
 });