Launch shell in Docker container via command line function

Add the following function somewhere where it will be picked up by your shell.

For example: ~/.bash_profile

Then use it like so:

$ deit api
Multiple containers found with 'api' in the name:
1. srv-captain--strippenkaart-api.1.ytwsvciqerfm3k0821tpowx23
2. srv-captain--verkooprapport-api.1.we0g3exhke86q2k2qgikzkmyk
3. srv-captain--trainingsomgeving-api.1.624q0sm2qkpbqxyn37osiq2er
4. srv-captain--funnelmonitor-api.1.phukkl9slxifjcvg3yx2ykdda
Choose the number of the container you want to use:

This is the bash function:

# in file ~/.bash_profile
# 'deit' as in: docker exec -it 
function deit {
    container_query="$1"
    shift 1
    container_command="${@:-bash}"  # Default to 'bash' if no command is provided

    # Get the list of matching container names
    matching_containers=($(docker ps --format '{{.Names}}' | grep "$container_query"))
    count=${#matching_containers[@]}

    if [ "$count" -eq 0 ]; then
        echo "No containers found with '$container_query' in the name."
        return 1
    elif [ "$count" -eq 1 ]; then
        container_name="${matching_containers[0]}"
        echo "Found container: $container_name"
        echo "Executing: docker exec -it $container_name $container_command"
        docker exec -it "$container_name" $container_command
    else
        echo "Multiple containers found with '$container_query' in the name:"
        for i in "${!matching_containers[@]}"; do
            echo "$((i + 1)). ${matching_containers[i]}"
        done

        while true; do
            read -p "Choose the number of the container you want to use: " choice
            if [[ "$choice" =~ ^[0-9]+$ ]] && [ "$choice" -ge 1 ] && [ "$choice" -le "$count" ]; then
                container_name="${matching_containers[$((choice - 1))]}"
                echo "Selected container: $container_name"
                echo "Executing: docker exec -it $container_name $container_command"
                docker exec -it "$container_name" $container_command
                break
            else
                echo "Invalid choice. Please try again."
            fi
        done
    fi
}