fix(docker): use absolute tsconfig.json path for tsc

tsc -p /app does not resolve to tsconfig.json at /app/tsconfig.json
without an explicit filename. Pass the full path.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

Dockerfile

@@ -16,7 +16,7 @@ COPY packages/ packages/
 COPY src/ src/
 RUN pnpm --filter @groombook/types build && \
     pnpm --filter @groombook/db build && \
-    /app/node_modules/.bin/tsc -p /app
+    /app/node_modules/.bin/tsc -p /app/tsconfig.json
 
 # Runtime
 FROM node:20-alpine AS runner