create_flags.sh

#!/bin/bash
export LC_ALL=C
export LANG=C

# Your docker-compose.yml file path
compose_file="docker-compose.yml"

# Function to generate a random 16-character uppercase string
generate_random_string() {
    tr -dc 'A-Z0-9' < /dev/urandom | head -c 16
}

# Create or clear the flags.env file
> flags.env

echo "Generating flags.env from $compose_file ..."

# Extract lines starting with environment entries that have FLAG_
grep "FLAG_" "$compose_file" | while read -r line; do
    # Remove leading/trailing spaces and the '- ' or key: part
    clean_line=$(echo "$line" | sed 's/^[[:space:]]*-[[:space:]]*//; s/^[[:space:]]*//')

    # Extract variable name before '=' or ':-'
    flag_name=$(echo "$clean_line" | sed 's/=.*//; s/:.*//')

    # Generate random uppercase string
    random_string=$(generate_random_string)

    # New value is FLAGNAME_RANDOMSTRING (or keep your FLAG{...} style)
    # Example: FLAG_FOO -> FLAG_FOO_RANDOMSTRING
    new_flag_value="${flag_name}_${random_string}"

    # Write to flags.env file
    echo "${flag_name}=${new_flag_value}" >> flags.env
done

echo "Done! Generated flags.env:"
echo "=========================="
cat flags.env