External contribution friendly design app job (#3090)
External contribution friendly design app job (#3090)

I tried building the design app locally, and it doesn't take very long.
So maybe we can remove the caching, so we don't need to connect to
dockerhub, so external PR's will get that check green (if it passes, of
course).
AjuntamentdeBarcelona/decidim,decidim/decidim,mainio/decidim,mainio/decidim,AjuntamentdeBarcelona/decidim,codegram/decidim,codegram/decidim,AjuntamentdeBarcelona/decidim,decidim/decidim,codegram/decidim,mainio/decidim,AjuntamentdeBarcelona/decidim,codegram/decidim,mainio/decidim,mainio/decidim,decidim/decidim