Control Multiple Docker Containers with a Single Bash Command

#!/bin/bash

# Configuration: List of container names to manage
CONTAINER_NAMES=("my-webapp-container" "my-db-container" "my-redis-container")

# --- Usage --- #
if [ -z "$1" ]; then
  echo "Usage: $0 [start|stop|restart|status]"
  exit 1
fi

COMMAND=$1

# --- Function to execute Docker command --- #
execute_docker_command() {
  local cmd="$1"
  local name="$2"
  echo "Executing 'docker ${cmd} ${name}'..."
  docker "${cmd}" "${name}"
  if [ $? -ne 0 ]; then
    echo "Warning: Command '${cmd}' failed for container '${name}'."
  fi
}

# --- Main Logic --- #
case "${COMMAND}" in
  start|stop|restart)
    for CONTAINER in "${CONTAINER_NAMES[@]}"; do
      execute_docker_command "${COMMAND}" "${CONTAINER}"
    done
    echo "All specified containers processed with command: ${COMMAND}"
    ;;
  status)
    echo "--- Status of specified containers ---"
    for CONTAINER in "${CONTAINER_NAMES[@]}"; do
      echo "Container: ${CONTAINER}"
      docker ps --filter "name=${CONTAINER}" --format "table {{.Names}}\t{{.Status}}\t{{.Ports}}"
      if [ $? -ne 0 ]; then
        echo "Error checking status for container '${CONTAINER}'."
      fi
    done
    ;;
  *)
    echo "Invalid command: ${COMMAND}"
    echo "Usage: $0 [start|stop|restart|status]"
    exit 1
    ;;
esac