fix: failing pipelines (#2)

Co-authored-by: Richard Attermeyer <richard.attermeyer@opitz-consulting.com>
Reviewed-on: https://git.192.168.1.151.nip.io:8543/fjadmin/ci-demo-2/pulls/2

.woodpecker/.frontend.yml

@@ -12,17 +12,28 @@ steps:
   "prepare":
     image: *frontend_image
     commands:
-      - cd frontend
       - pnpm install
+    directory: frontend
   "lint:style":
     image: *frontend_image
     commands:
-      - cd frontend
       - pnpm run prettier
+    directory: frontend
   "lint:analyze":
     image: *frontend_image
     commands:
-      - cd frontend
       - pnpm run lint
+    directory: frontend
+  "build:frontend":
+    image: *frontend_image
+    commands:
+      - pnpm run build
+    directory: frontend
+  "build:tsc":
+    image: *frontend_image
+    commands:
+      - pnpm add typescript
+      - pnpm run typecheck
+    directory: frontend
 depends_on:
   - "lint_general"