Bash script to create multiple instances of an image with different texts in each one

add_text_to_image.sh

# Requirements: imagemagick
# Usage: add_text_to_image.sh FileWithTextLines.txt
#!/bin/bash
COUNTER=1
while IFS='' read -r line || [[ -n "$line" ]]; do
    echo "Text to insert ($COUNTER): $line"
    convert -pointsize 36 -draw "text 390,135 '$line'" imgsrc.png imgdst$COUNTER.png
    let COUNTER=COUNTER+1
done < "$1"