alpine:edge-based dockerization of qrencode, the command-line utility for generating QR codes in various formats (PNG, terminal text, etc.)
As the site says, qrencode is:
for encoding data in a QR Code symbol, a 2D symbology that can be scanned by handy terminals such as a mobile phone[s] with [cameras]. The capacity of QR Code is up to 7000 digits or 4000 characters and has high robustness.
The source code for this image is hosted on GitHub in the backplane/conex repo.
The following shell function can assist in running this image interactively:
qrencode() {
docker run \
--rm \
--interactive \
--tty \
--volume "$(pwd):/work" \
"backplane/qrencode" \
"$@"
}