How to run a docker container at startup under nixos











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I would like to run a pre-built docker container under NixOS.
I would like to do this in a Nix-ish way:




  1. Install the container from docker hub itself via a nix expression, which is thus reproducible. The docker is currently listed as 'latest', I'm hoping that there is some way to go from that to a version id.

  2. Run the container from startup, by embedding an expression (indirectly) in /etc/nixos/configuration.nix, presumably via a systemd service, thus configuring this declaratively.


I have found a few pages about building docker containers from within nix, although I can't even get example number 4 here working. But I haven't found any examples of running containers via the system declaration.



I would really appreciate some help or pointers (or examples!) here, I'm thrashing around a bit trying to make stuff work. I have only a passing familiarity with docker.










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  • Here's a relevant issue: github.com/NixOS/nixpkgs/issues/37553
    – Robert Hensing
    Nov 20 at 16:19










  • Perhaps you could ask copumpkin on IRC what the problems with his declarative containers module were
    – Robert Hensing
    Nov 20 at 16:20










  • According to that it's an experimental feature?
    – Chris Stryczynski
    Nov 20 at 21:42















up vote
1
down vote

favorite












I would like to run a pre-built docker container under NixOS.
I would like to do this in a Nix-ish way:




  1. Install the container from docker hub itself via a nix expression, which is thus reproducible. The docker is currently listed as 'latest', I'm hoping that there is some way to go from that to a version id.

  2. Run the container from startup, by embedding an expression (indirectly) in /etc/nixos/configuration.nix, presumably via a systemd service, thus configuring this declaratively.


I have found a few pages about building docker containers from within nix, although I can't even get example number 4 here working. But I haven't found any examples of running containers via the system declaration.



I would really appreciate some help or pointers (or examples!) here, I'm thrashing around a bit trying to make stuff work. I have only a passing familiarity with docker.










share|improve this question
























  • Here's a relevant issue: github.com/NixOS/nixpkgs/issues/37553
    – Robert Hensing
    Nov 20 at 16:19










  • Perhaps you could ask copumpkin on IRC what the problems with his declarative containers module were
    – Robert Hensing
    Nov 20 at 16:20










  • According to that it's an experimental feature?
    – Chris Stryczynski
    Nov 20 at 21:42













up vote
1
down vote

favorite









up vote
1
down vote

favorite











I would like to run a pre-built docker container under NixOS.
I would like to do this in a Nix-ish way:




  1. Install the container from docker hub itself via a nix expression, which is thus reproducible. The docker is currently listed as 'latest', I'm hoping that there is some way to go from that to a version id.

  2. Run the container from startup, by embedding an expression (indirectly) in /etc/nixos/configuration.nix, presumably via a systemd service, thus configuring this declaratively.


I have found a few pages about building docker containers from within nix, although I can't even get example number 4 here working. But I haven't found any examples of running containers via the system declaration.



I would really appreciate some help or pointers (or examples!) here, I'm thrashing around a bit trying to make stuff work. I have only a passing familiarity with docker.










share|improve this question















I would like to run a pre-built docker container under NixOS.
I would like to do this in a Nix-ish way:




  1. Install the container from docker hub itself via a nix expression, which is thus reproducible. The docker is currently listed as 'latest', I'm hoping that there is some way to go from that to a version id.

  2. Run the container from startup, by embedding an expression (indirectly) in /etc/nixos/configuration.nix, presumably via a systemd service, thus configuring this declaratively.


I have found a few pages about building docker containers from within nix, although I can't even get example number 4 here working. But I haven't found any examples of running containers via the system declaration.



I would really appreciate some help or pointers (or examples!) here, I'm thrashing around a bit trying to make stuff work. I have only a passing familiarity with docker.







docker nixos






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edited Nov 20 at 21:48









Chris Stryczynski

3,59242761




3,59242761










asked Nov 19 at 19:51









user3416536

25817




25817












  • Here's a relevant issue: github.com/NixOS/nixpkgs/issues/37553
    – Robert Hensing
    Nov 20 at 16:19










  • Perhaps you could ask copumpkin on IRC what the problems with his declarative containers module were
    – Robert Hensing
    Nov 20 at 16:20










  • According to that it's an experimental feature?
    – Chris Stryczynski
    Nov 20 at 21:42


















  • Here's a relevant issue: github.com/NixOS/nixpkgs/issues/37553
    – Robert Hensing
    Nov 20 at 16:19










  • Perhaps you could ask copumpkin on IRC what the problems with his declarative containers module were
    – Robert Hensing
    Nov 20 at 16:20










  • According to that it's an experimental feature?
    – Chris Stryczynski
    Nov 20 at 21:42
















Here's a relevant issue: github.com/NixOS/nixpkgs/issues/37553
– Robert Hensing
Nov 20 at 16:19




Here's a relevant issue: github.com/NixOS/nixpkgs/issues/37553
– Robert Hensing
Nov 20 at 16:19












Perhaps you could ask copumpkin on IRC what the problems with his declarative containers module were
– Robert Hensing
Nov 20 at 16:20




Perhaps you could ask copumpkin on IRC what the problems with his declarative containers module were
– Robert Hensing
Nov 20 at 16:20












According to that it's an experimental feature?
– Chris Stryczynski
Nov 20 at 21:42




According to that it's an experimental feature?
– Chris Stryczynski
Nov 20 at 21:42












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1
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Not sure about a 'nix-ish' way but if you just pull the docker image (you can pull a specific version by specifying a tag or a sha256 of the image).



And then either use the docker's daemon functionality to start it up automatically at boot (--restart flag), or you could write a systemd unit file (this unit file might have some integration potential with nixos) to start it for you.



Not a very conclusive answer - but seeing no other answers, hopefully this helps!






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    up vote
    1
    down vote













    Not sure about a 'nix-ish' way but if you just pull the docker image (you can pull a specific version by specifying a tag or a sha256 of the image).



    And then either use the docker's daemon functionality to start it up automatically at boot (--restart flag), or you could write a systemd unit file (this unit file might have some integration potential with nixos) to start it for you.



    Not a very conclusive answer - but seeing no other answers, hopefully this helps!






    share|improve this answer

























      up vote
      1
      down vote













      Not sure about a 'nix-ish' way but if you just pull the docker image (you can pull a specific version by specifying a tag or a sha256 of the image).



      And then either use the docker's daemon functionality to start it up automatically at boot (--restart flag), or you could write a systemd unit file (this unit file might have some integration potential with nixos) to start it for you.



      Not a very conclusive answer - but seeing no other answers, hopefully this helps!






      share|improve this answer























        up vote
        1
        down vote










        up vote
        1
        down vote









        Not sure about a 'nix-ish' way but if you just pull the docker image (you can pull a specific version by specifying a tag or a sha256 of the image).



        And then either use the docker's daemon functionality to start it up automatically at boot (--restart flag), or you could write a systemd unit file (this unit file might have some integration potential with nixos) to start it for you.



        Not a very conclusive answer - but seeing no other answers, hopefully this helps!






        share|improve this answer












        Not sure about a 'nix-ish' way but if you just pull the docker image (you can pull a specific version by specifying a tag or a sha256 of the image).



        And then either use the docker's daemon functionality to start it up automatically at boot (--restart flag), or you could write a systemd unit file (this unit file might have some integration potential with nixos) to start it for you.



        Not a very conclusive answer - but seeing no other answers, hopefully this helps!







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 20 at 21:47









        Chris Stryczynski

        3,59242761




        3,59242761






























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