A script that waits for a file to exist in a docker container with a timeout

wait_for_file_in_docker.sh

#!/usr/bin/bash

FILE_PATH=$1
CONTAINER=$2
TIMEOUT=$3

start_time=$(date +%s)
while true; do
  elapsed_time=$(($(date +%s) - start_time))
  if [ $elapsed_time -gt $TIMEOUT ]; then
    echo "Timeout reached"
    exit 1
  fi

  docker compose exec "$CONTAINER" [ -f "$FILE_PATH" ] && break

  sleep 1
done