That file is indeed the one that generates the official perl image. It starts "FROM debian:buster-slim"
Now we could assume the official LMS image could be built by a process that would start "FROM perl:5.028-slim-buster" (or so) Meaning, since official images from Docker Hub are multi-arch, the LMS build process would magically pull the buster+perl:5.02 image built for the right arch ... ... and from there something has to happen to make LMS appear within that buster+perl image, resulting in an "official" LMS image. When installing the LMS image you would see various parallel "pulls" happen, (at least) one for buster, one for perl, one for LMS. Each of these are stored in a different directory/layer, the filesystem of an image/container is the fusion of these layers. (visit /var/lib/docker, you'll see what I mean) This is efficient(*) because if next you'd pull, say, redis:latest, and that image is built "FROM debian:buster-slim" too, then you wouldn't pull and store the buster part again, since the same layer is already present somewhere in /var/lib/docker/ In other words, a user pulling the LMS image built "FROM perl:5.028-slim-buster" would certainly have to download the LMS layer(s), possibly have to download the perl layer(s), probably not have to download the buster layer(s) since the image is often taken as starting point. *)There is also a tragic consequence to this: every line in a Dockerfile -except a few like USER, ENV...- generates a new layer. That's why you see Dockerfiles where commands make ample use of continuation lines, to try keeping the number of generated layers in check) 2 SB 3 1 PCP 6 Libratone Loop, Zipp, Zipp Mini iPeng (iPhone + iPad) LMS 7.9 (linux) with plugins: CD Player, WaveInput, Triode's BBC iPlayer by bpa IRBlaster by Gwendesign (Felix) Smart Mix, Music Walk With Me, What Was That Tune? by Michael Herger PowerSave by Jason Holtzapple Song Info, Song Lyrics by Erland Isaksson AirPlay Bridge by philippe_44 WeatherTime by Martin Rehfeld Auto Dim Display, SaverSwitcher, ContextMenu by Peter Watkins. ------------------------------------------------------------------------ epoch1970's Profile: http://forums.slimdevices.com/member.php?userid=16711 View this thread: http://forums.slimdevices.com/showthread.php?t=111828
_______________________________________________ unix mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/unix
