fix: replace fragile printf start.sh with COPY start.sh

The RUN printf approach had a POSIX printf bug where \\c stopped
output, truncating the startup script. Now start.sh is a proper
file COPYed into the image.

Dockerfile

@@ -37,10 +37,8 @@ RUN mkdir -p /app/data && chown nextjs:nodejs /app/data
 RUN chown -R nextjs:nodejs /app/node_modules/@prisma /app/node_modules/prisma /app/node_modules/.prisma /app/prisma 2>/dev/null || true
 
 # Startup script — migrate volumes DB then launch server
-RUN printf '#!/bin/sh\n\
-cd /app\n\
-node ./node_modules/prisma/build/index.js db push --skip-generate --accept-data-loss 2>&1\n\
-# Force 0.0.0.0 binding (Docker sets HOSTNAME to container ID)\nexport HOSTNAME=0.0.0.0\nexec node server.js\n' > /app/start.sh && chmod +x /app/start.sh
+COPY start.sh /app/start.sh
+RUN chmod +x /app/start.sh
 
 # ── Docker HEALTHCHECK ──────────────────────────────────────────
 # Auto-restarts container if health endpoint fails 3 times (30s interval, 10s timeout)

start.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+# Falah Mobile — container startup script
+cd /app
+# Run Prisma migrations against the volume-mounted DB
+node ./node_modules/prisma/build/index.js db push --skip-generate --accept-data-loss 2>&1
+# Force 0.0.0.0 binding (Docker sets HOSTNAME to container ID)
+export HOSTNAME=0.0.0.0
+exec node server.js