Add Dockerfile, which builds docker with nix package manager

[offlinehacker]

With this Dockerfile, https://registry.hub.docker.com/u/offlinehacker/nixpkgs will automaticlly build docker image with nix package manager and nixpkgs(repo itself) on every push. To use this docker image: docker -t -i offlinehacker/nixpkgs. I advise nixos organization to create it's own account on docker registry and setup automated builds.

Example Dockefile that uses this image:

FROM offlinehacker/nixpkgs
RUN nix-env -iA nixpkgs.mongodb
RUN mkdir -p /var/db/mongodb
CMD mongod --dbpath /var/db/mongodb

PS: Docker is not a replacement for nixos, docker is process manager(which can also run whole nixos container), nixos is os, just to make this clear.

[garbas]

@offlinehacker you think you can create a NixOS account and manage it for now? i guess you're the biggest docker+nix user

[offlinehacker]

I can create nixos docker account if others are fine with that(i can share login info)? @edolstra @rbvermaa @iElectric ?

[rbvermaa]

@offlinehacker I'm fine with you creating a nixos account if you keep the image up-to-date.

[rbvermaa]

@offlinehacker Can we put the Dockerfile somewhere else than the root of nixpkgs?

[offlinehacker]

@rbvermaa as far as i know yes, where do you think it should be put, maybe in top-level because it is nixpkgs related and not nixos?

keeping up-to-date is a matter of pushing a button on docker hub, and even this could be automated if a branch would be updated on unstable release, this would be really usefull.

[rbvermaa]

@offlinehacker How about in maintainers/docker/ subdirectory?

[aristidb]

Merged, in subdirectory

[offlinehacker]

I will reopen this pull request, because this dockerfile needs some tunning, i'm working on kubernetes nixos module, so after extensive testing i will make required modifications and report back what's the best way of running nixpkgs/nixos on docker like clouds.

[aristidb]

Oh no, think about the "open pull request" count! ;-)

[domenkozar]

Let me know if this should be part of 14.11 release

[7c6f434c]

@offlinehacker So, are there any outstanding changes here?

I guess minor changes should be committed directly, and a PR without any changes should be closed. An issue could be created in its place, if needed.

[wmertens]

This needs to be updated for Nix 1.8. Also, why not simply use the install procedure curl https://nixos.org/nix/install | sh?

[offlinehacker]

I don't think that's even proper way to run nix with docker, I'm working on
service abstraction layer that would make declarative docker containers
possible.
On Jan 23, 2015 11:53 PM, "Wout Mertens" [email protected] wrote:

In Dockerfile
#4642 (comment):

@@ -0,0 +1,12 @@
+FROM busybox
+
+RUN dir=mktemp -d && trap 'rm -rf "$dir"' EXIT && \

• wget -O- http://nixos.org/releases/nix/nix-1.7/nix-1.7-x86_64-linux.tar.bz2 | bzcat | tar x -C $dir && \

This needs to be updated for Nix 1.8. Also, why not simply use the install
procedure curl https://nixos.org/nix/install | sh?

—
Reply to this email directly or view it on GitHub
https://github.com/NixOS/nixpkgs/pull/4642/files#r23486704.

[offlinehacker]

This is in nix now

[bbarker]

Using a very simple Dockerfile, I get an error that seems to indicate /bin/sh does not exist.

FROM offlinehacker/nixos
COPY *.nix /etc/nixos/
RUN "nixos-rebuild switch --upgrade"

$ docker build -t nixos:testing0 -f NixOS .                                                                                                                                                                                                                                                                                                                                                                       
Sending build context to Docker daemon  14.34kB
Step 1/3 : FROM offlinehacker/nixos
 ---> 65f8b74f4779
Step 2/3 : COPY *.nix /etc/nixos/
 ---> 4543000ca04b
Removing intermediate container de86ee1dd67c
Step 3/3 : RUN "nixos-rebuild switch --upgrade"
 ---> Running in 671ac3ef975d
container_linux.go:262: starting container process caused "exec: \"/bin/sh\": stat /bin/sh: no such file or directory"
oci runtime error: container_linux.go:262: starting container process caused "exec: \"/bin/sh\": stat /bin/sh: no such file or directory"