It can also be wrapped in a bash or zsh alias so you can just run decode_qr:

decode_qr() {
    docker run --rm \
        -v "$(pwd):/app" \
        -w /app \
        debian:bookworm-slim \
        sh -c '
            apt update >/dev/null 2>&1 && 
            apt install -y zbar-tools >/dev/null 2>&1 &&
            for file in *.svg; do 
                echo "\n$file"
                zbarimg --raw --nodbus -q "$file"
            done
        '
}

• add the function snippet above to your ~./zshrc or ~./bashrc
• restart your terminal
• then you can just cd to the directory containing QR code SVG files and run decode_qr

For reference here are the zbarimg docs:

https://manpages.ubuntu.com/manpages/jammy/en/man1/zbarimg.1.html