CMD

CMD ["npm", "run", "dev"].

CMD ["/bin/sh", "start.sh"].

–.

script.sh

#!/bin/sh.

FLAG_FILE="./first_run.flag".

if [ ! -f "$FLAG_FILE" ]; then

First run.

Touch "$FLAG_FILE".

tail -f /dev/null

else

Subsequent runs.

Npm run dev.

Fi.