Creating docker images is great!
If gedit or xed are among your favorite text editors, you've probably noticed that they don't provide automatic syntax highlighting for Dockerfile files.
Let's fix that!
$ wget -q https://raw.githubusercontent.com/mrorgues/gedit-xed-docker-syntax-highlighting/master/docker.lang
$ sudo mv -i docker.lang /usr/share/gtksourceview-3.0/language-specs/docker.lang
$ sudo chmod 644 /usr/share/gtksourceview-3.0/language-specs/docker.lang
Please find more information here: https://developer.gnome.org/gtksourceview/stable/lang-tutorial.html