fix: update Dockerignore files to include all apps while excluding specific ones

apps/app/docker/Dockerfile.dockerignore

@@ -22,7 +22,9 @@ out
 # ============================================================
 # Unrelated apps
 # ============================================================
-apps/slackbot-proxy
+apps/**
+!apps/app
+!apps/pdf-converter
 
 # ============================================================
 # Test files

apps/pdf-converter/docker/Dockerfile.dockerignore

@@ -0,0 +1,10 @@
+**/node_modules
+**/dist
+**/coverage
+**/Dockerfile
+**/*.dockerignore
+**/.pnpm-store
+**/.turbo
+out
+apps/**
+!apps/pdf-converter

apps/slackbot-proxy/docker/Dockerfile.dockerignore

@@ -6,4 +6,5 @@
 **/.pnpm-store
 **/.turbo
 out
-apps/app
+apps/**
+!apps/slackbot-proxy