Hi. Thanks! My personal take on where Docker is heading to? There are so many things people can do with this, it's hard to summarize.
What I personally care most about? As a designer ex-entrepreneur and front-end developer, the thing that gets me going most is the idea that I'm able to "just run" an application. No more difficult than from the Mac store. For example Trac (a wiki system), Wordpress, Django apps, Mailservers, torrent-servers. Basic stuff which just makes it easier for me to deploy my creations, and those of others.
Absolutely love docker, hope to see it mature even more :)
I am currently playing around with it and building a messaging platform playground. One "pain" so far is that docker's IPAddress assignment is not very flexible. Will it be possible to assign IP addresses to containers (e.g. from "docker run")? Or have a better control what IPAddresses are used (like giving a network range on docker -d)?
If i am not mistaken docker saves changes in containers through aufs and keeps those changes as separate images on disk, right? I'm currently working with containers which keep their state on the host OS (by mount bindings) and thus, i don't want to keep old images of not-running containers. Will there be some switch to disable that or clean up old ones? Maybe i am misinterpreting something, but i'm new to docker ;)
Anyway, keep up the great work, i am very impressed with docker, kudos!!
You have to run ./unionize <bridge> <container sha1> <ip address> after starting the container, but that brings up a new interface inside the container with that IP and connects it to the bridge.
This is useful for having private IPs between containers of an application, for accessing databases or similar.
I was starting with unionize as well, but the fact is that docker looks up for available IP adresses on its own.
So you can give docker -d the -b parameter and pass an existing bridge and it will go through that bridges IP space and assign IP adresses already.
Also that way the IP address shows in "docker inspect" which it doesn't with unionize.sh (i think).
The problem here is that the built-in IP Address allocator is rather stupid and doesn't even try to ping an address before assigning it.
I got it to interfere with my network heavily when it assigned my gateways IP Address to a container ;)
It'd be nice if the whole IP Address allocation was more pluggable or configurable. Right now it's some code deeply tied into the whole system (i think) and i fear i don't have the Go skills to change that myself :(
(for example, i think i would have been able to write a little bit of Go to assign IP Addresses the way i want to, if the system would be more pluggable)
Nice job so far. Where do you see this heading to? What's your view of what will happen in the virtualization world?
Best,