How to get Docker running on Sprites?

1

Hi, are docker and/or podman supported on Sprites? I’m somehow having lots of issues getting either to run. Would love if there was either a tutorial or script that could be shared. Being able to run dockerized processes is a requirement since some of our software dependencies (e.g. AWS localstack) are now only made available as a Docker-based runtime.

Thanks

PS: I tried the standard ‘apt install docker.io’, etc. Used AI to try to get around errors and towards a running state but must have run down the wrong paths :frowning:

2

docker.io is the old package on Debian etc. The new way is apt install docker-ce. I’ve not tried sprites, but I would assume this would work. It is sometimes worth doing a apt update first, in case your catalogue is outdated.

Depending how your user is set up, you may have to preface these commands with sudo.

Sprites are just Linux machines, so I can’t imagine why Docker would not work out of the box.

3

Hmmm, I think docker.io is the correct package. For instance, if I ask to install docker-compose here are the dependencies I get:

sprite@sprite:~$ apt install docker-compose
Installing:
docker-compose

Installing dependencies:
apparmor                 dbus-system-bus-common  libip6tc2                nftables         python3-docker        python3-jsonschema-specifications  python3-websocket
bridge-utils             dns-root-data           libnetfilter-conntrack3  pigz             python3-dockerpty     python3-packaging                  python3-yaml
containerd               dnsmasq-base            libnfnetlink0            python3-attr     python3-docopt        python3-referencing                runc
dbus                     docker.io               libnftables1             python3-certifi  python3-dotenv        python3-requests                   ubuntu-fan
dbus-bin                 iptables                libnftnl11               python3-chardet  python3-idna          python3-rpds-py
dbus-daemon              libdbus-1-3             lsb-release              python3-compose  python3-json-pointer  python3-texttable
dbus-session-bus-common  libip4tc2               netcat-openbsd           python3-distro   python3-jsonschema    python3-urllib3

(Besides, there is no ‘docker-ce’ package available by default)

Yes, I agree that “Sprites are just Linux machines” but they use a customized Linux distro/image that is based on Ubuntu 25.04 (at the moment). The problem isn’t “Linux” as much as distribution and package setup.

I’m sure it’s possible, I’m just hoping somebody has figured out the steps/configuration to get Docker running because albeit I’m an experienced Ubuntu user, and I’ve set up Docker and Podman on multiple different machines and versions, I still couldn’t figure it out easily.

Thanks for the response in any case!

1 Like
4

It’s definitely possible, some of us working on the Sprites backend use localstack as an object store against which to run integration tests.

I don’t have much wisdom beyond just telling claude or opencode or whatever frontend/LLM you might use to “use localstack for S3 creds” or “install docker”. I don’t think it has ever failed to install using a very basic prompt like this.

Do you mind sharing your failed attempt?

I fired up a fresh sprite and prompted claude with can you install docker and localstack and then tell me exactly what commands you had to run to do it, here’s what it responded:

  Docker installation:

  # Update package lists
  sudo apt-get update

  # Install prerequisites
  sudo apt-get install -y ca-certificates curl gnupg lsb-release

  # Add Docker's GPG key
  sudo install -m 0755 -d /etc/apt/keyrings
  curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
  sudo chmod a+r /etc/apt/keyrings/docker.gpg

  # Add Docker apt repository
  echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

  # Update apt and install Docker
  sudo apt-get update
  sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

  LocalStack installation:

  # Install via pip
  pip3 install localstack

  # Symlink binary to PATH (the pip binary landed in pyenv's bin, not on PATH)
  sudo ln -s /.sprite/languages/python/pyenv/versions/3.13.7/bin/localstack /usr/local/bin/localstack

  Versions installed:
  - Docker: 29.2.1
  - LocalStack CLI: 4.13.1

  Note: The Docker daemon was already running after the apt install (it started automatically via a pre-existing dockerd process). docker info confirmed it was up with 0 containers.

I can confirm both were installed.

1 Like
5

I followed your instructions (literally just copy-pasted) but here’s what I get afterwards:

sprite@sprite:~$ docker ps
failed to connect to the docker API at unix:///var/run/docker.sock; check if the path is correct and if the daemon is running: dial unix /var/run/docker.sock: connect: no such file or directory

(and similarly, localstack start reports the same issue with docker)

It doesn’t look like dockerd is running on my system after the install either.

sprite@sprite:~$ ps -A
PID TTY          TIME CMD
1 ?        00:00:00 tini
2 ?        00:00:00 tail
3 pts/0    00:00:00 fish
1371 pts/1    00:00:00 fish
2062 pts/1    00:00:00 ps

Thoughts?

6

That looks like a Docker start-up issue. Have you tried searching for the issue? I used this AI service (no sign-up required) to ask this question:

I have seen someone on the web with this Docker problem:

failed to connect to the docker API at unix:///var/run/docker.sock; check if the path is correct and if the daemon is running: dial unix /var/run/docker.sock: connect: no such file or directory

I would guess that they have not started the Docker service. Assuming they’re on Debian/Ubuntu, what start-up command do they need?

Here’s the reply:

The error message indicates that the Docker service is likely not running or the Docker socket cannot be accessed. To start the Docker service on a Debian or Ubuntu system, you can use the following command:

sudo systemctl start docker

If you want to enable Docker to start automatically at boot, use:

sudo systemctl enable docker

After starting the service, you can check its status with:

sudo systemctl status docker

This will confirm whether the Docker service is running correctly.

You may not need sudo with these commands. Feel free to experiment, and if you get an error, get (re)searching :trophy:

7

Scanning the list of commands, it doesn’t look like any of them actually start docker, they’re just installing docker and localstack. You can even see the LLM notes that dockerd was already running without explicitly starting it, so I guess somehow it was booted:

Note: The Docker daemon was already running after the apt install (it started automatically via a pre-existing dockerd process). docker info confirmed it was up with 0 containers.

The fact that docker ps doesn’t given no command docker or something like that indicates install was successful. You need to actually boot dockerd to use docker though, as @halfer says.

8

I understand you’re all trying to be helpful but please understand that I’m an experienced Linux and Docker user and I’m looking for someone who’s actually ran Docker on Sprites successfully. (I can use an LLM and copy/paste commands like any of you, but I haven’t been successful. LLMs don’t know enough about Sprites-specific environment so they are spitballing in different directions)

For what it’s worth, Sprites don’t have systemd installed, so all these commands related to systemctl starting docker as a daemon won’t work.

If you want to be helpful on this thread, please share experiences where you were *successful* in using Docker on Sprites, and share your installation/configurations notes.

Thanks again! I appreciate everybody trying to help and I’m also trying to keep this thread productive.

2 Likes
9

I’ve run docker dozens of times simply by getting claude to install and run everything itself as I mentioned in the post above. I’m not copy/pasting from a browser chat interface, I literally created a sprite, ran claude and asked it to install and run docker for me and it did it without issue and I copy/pasted the list of commands it spat out.

If this is not your experience, it’d be helpful for you to share where claude or your LLM of choice is stumbling, so we can help you.

In your response, you’ve copy/pasted an error that commonly means dockerd is not running. Did you try sudo dockerd? I would be very surprised if claude can’t immediately notice systemctl is not available and try alternatives.

1 Like
10

Here’s a recording of me doing this just now: installing docker on a sprite - asciinema.org

11

Understood @alexboisvert. My contributions also are intended to keep the thread productive: even if they seem overly simplistic, they can be a useful foil against which a question author could say, “ah, at step 4, I get a different result”. That can efficiently identify where expectation and reality are divergent.

Per Jacob’s note, do let us know where exactly you’re now stuck. Have you gotten docker-ce installed now? I continue to believe that is the correct (and modern) package.

(Your note about your experience level is very useful. Note that most question authors here are vibe-coders who have no coding or system design experience at all. It is possible that my replies are subconsciously affected by this dynamic.)

12

Right, I fixed it. I popped on some Greek funk on the headphones, poured myself a loose-leaf lemon and ginger tea, and got tapping away :headphone:. I had not tried sprites before, so it was a fun exercise.

I got the same error, by following Jacob’s notes to the letter, but without the Local stack stuff. sudo is in fact required. My first idea, that the Docker service needs starting, turned out to be incorrect:

sprite@poking-around:~$ docker ps
failed to connect to the docker API at unix:///var/run/docker.sock; check if the path is correct and if the daemon is running: dial unix /var/run/docker.sock: connect: no such file or directory
sprite@poking-around:~$ sudo systemctl start docker
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to system scope bus via local transport: Host is down
sprite@poking-around:~$ sudo systemctl enable docker
Synchronizing state of docker.service with SysV service script with /usr/lib/systemd/systemd-sysv-install.
Executing: /usr/lib/systemd/systemd-sysv-install enable docker
sprite@poking-around:~$ sudo systemctl status docker
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to system scope bus via local transport: Host is down
sprite@poking-around:~$ docker ps
failed to connect to the docker API at unix:///var/run/docker.sock; check if the path is correct and if the daemon is running: dial unix /var/run/docker.sock: connect: no such file or directory

I then surmised that the issue was that I need to be a member of the docker group:

sprite@poking-around:~$ groups
sprite
sprite@poking-around:~$ sudo usermod -aG docker $USER
Usage: usermod [options] LOGIN

Options:
  -a, --append                  append the user to the supplemental GROUPS
                                mentioned by the -G option without removing
                                the user from other groups
  -b, --badname                 allow bad names
  -c, --comment COMMENT         new value of the GECOS field
  -d, --home HOME_DIR           new home directory for the user account
  -e, --expiredate EXPIRE_DATE  set account expiration date to EXPIRE_DATE
  -f, --inactive INACTIVE       set password inactive after expiration
                                to INACTIVE
  -g, --gid GROUP               force use GROUP as new primary group
  -G, --groups GROUPS           new list of supplementary GROUPS
  -h, --help                    display this help message and exit
  -l, --login NEW_LOGIN         new value of the login name
  -L, --lock                    lock the user account
  -m, --move-home               move contents of the home directory to the
                                new location (use only with -d)
  -o, --non-unique              allow using duplicate (non-unique) UID
  -p, --password PASSWORD       use encrypted password for the new password
  -P, --prefix PREFIX_DIR       prefix directory where are located the /etc/* files
  -r, --remove                  remove the user from only the supplemental GROUPS
                                mentioned by the -G option without removing
                                the user from other groups
  -R, --root CHROOT_DIR         directory to chroot into
  -s, --shell SHELL             new login shell for the user account
  -u, --uid UID                 new UID for the user account
  -U, --unlock                  unlock the user account
  -v, --add-subuids FIRST-LAST  add range of subordinate uids
  -V, --del-subuids FIRST-LAST  remove range of subordinate uids
  -w, --add-subgids FIRST-LAST  add range of subordinate gids
  -W, --del-subgids FIRST-LAST  remove range of subordinate gids
  -Z, --selinux-user SEUSER     new SELinux user mapping for the user account
      --selinux-range SERANGE   new SELinux MLS range for the user account

sprite@poking-around:~$ echo $USER

sprite@poking-around:~$ whoami
sprite
sprite@poking-around:~$ sudo usermod -aG docker sprite
sprite@poking-around:~$ newgrp docker
sprite@poking-around:~$ groups
docker
sprite@poking-around:~$ docker ps
failed to connect to the docker API at unix:///var/run/docker.sock; check if the path is correct and if the daemon is running: dial unix /var/run/docker.sock: connect: no such file or directory

That was also a false lead, and moreover I discover that $USER is not set!

Finally, Jacob was quite right about dockerd having not started up; one just needs to start it manually:

sprite@poking-around:~$ sudo dockerd &
[1] 1848
sprite@poking-around:~$ INFO[2026-02-23T19:28:31.149036664Z] Starting up                                  
INFO[2026-02-23T19:28:31.150927667Z] containerd not running, starting managed containerd 
INFO[2026-02-23T19:28:31.152239599Z] started new containerd process                address=/var/run/docker/containerd/containerd.sock module=libcontainerd pid=1863
INFO[2026-02-23T19:28:31.176932588Z] starting containerd                           revision=dea7da592f5d1d2b7755e3a161be07f43fad8f75 version=v2.2.1
WARN[2026-02-23T19:28:31.188177166Z] Configuration migrated from version 2, use `containerd config migrate` to avoid migration  t="5.861µs"
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INFO[2026-02-23T19:28:31.197607380Z] created NRI interface                        
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INFO[2026-02-23T19:28:31.198849732Z] Get image filesystem path "/var/lib/docker/containerd/daemon/io.containerd.snapshotter.v1.overlayfs" for snapshotter "overlayfs" 
INFO[2026-02-23T19:28:31.198870782Z] Start snapshots syncer                       
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INFO[2026-02-23T19:28:31.199213853Z] starting cri plugin                           config="{\"containerd\":{\"defaultRuntimeName\":\"runc\",\"runtimes\":{\"runc\":{\"runtimeType\":\"io.containerd.runc.v2\",\"runtimePath\":\"\",\"PodAnnotations\":null,\"ContainerAnnotations\":null,\"options\":{\"BinaryName\":\"\",\"CriuImagePath\":\"\",\"CriuWorkPath\":\"\",\"IoGid\":0,\"IoUid\":0,\"NoNewKeyring\":false,\"Root\":\"\",\"ShimCgroup\":\"\",\"SystemdCgroup\":false},\"privileged_without_host_devices\":false,\"privileged_without_host_devices_all_devices_allowed\":false,\"cgroupWritable\":false,\"baseRuntimeSpec\":\"\",\"cniConfDir\":\"\",\"cniMaxConfNum\":0,\"snapshotter\":\"\",\"sandboxer\":\"podsandbox\",\"io_type\":\"\"}},\"ignoreBlockIONotEnabledErrors\":false,\"ignoreRdtNotEnabledErrors\":false},\"cni\":{\"binDir\":\"\",\"binDirs\":[\"/opt/cni/bin\"],\"confDir\":\"/etc/cni/net.d\",\"maxConfNum\":1,\"setupSerially\":false,\"confTemplate\":\"\",\"ipPref\":\"\",\"useInternalLoopback\":false},\"enableSelinux\":false,\"selinuxCategoryRange\":1024,\"maxContainerLogLineSize\":16384,\"disableApparmor\":false,\"restrictOOMScoreAdj\":false,\"disableProcMount\":false,\"unsetSeccompProfile\":\"\",\"tolerateMissingHugetlbController\":true,\"disableHugetlbController\":true,\"device_ownership_from_security_context\":false,\"ignoreImageDefinedVolumes\":false,\"netnsMountsUnderStateDir\":false,\"enableUnprivilegedPorts\":true,\"enableUnprivilegedICMP\":true,\"enableCDI\":true,\"cdiSpecDirs\":[\"/etc/cdi\",\"/var/run/cdi\"],\"drainExecSyncIOTimeout\":\"0s\",\"ignoreDeprecationWarnings\":null,\"containerdRootDir\":\"/var/lib/docker/containerd/daemon\",\"containerdEndpoint\":\"/var/run/docker/containerd/containerd.sock\",\"rootDir\":\"/var/lib/docker/containerd/daemon/io.containerd.grpc.v1.cri\",\"stateDir\":\"/var/run/docker/containerd/daemon/io.containerd.grpc.v1.cri\"}"
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INFO[2026-02-23T19:28:31.199551233Z] loading plugin                                id=io.containerd.streaming.v1.manager type=io.containerd.streaming.v1
INFO[2026-02-23T19:28:31.199565754Z] loading plugin                                id=io.containerd.grpc.v1.streaming type=io.containerd.grpc.v1
INFO[2026-02-23T19:28:31.199592784Z] loading plugin                                id=io.containerd.grpc.v1.tasks type=io.containerd.grpc.v1
INFO[2026-02-23T19:28:31.199611754Z] loading plugin                                id=io.containerd.grpc.v1.transfer type=io.containerd.grpc.v1
INFO[2026-02-23T19:28:31.199630774Z] loading plugin                                id=io.containerd.grpc.v1.version type=io.containerd.grpc.v1
INFO[2026-02-23T19:28:31.199645954Z] loading plugin                                id=io.containerd.monitor.container.v1.restart type=io.containerd.monitor.container.v1
INFO[2026-02-23T19:28:31.199680964Z] loading plugin                                id=io.containerd.tracing.processor.v1.otlp type=io.containerd.tracing.processor.v1
INFO[2026-02-23T19:28:31.199699934Z] skip loading plugin                           error="skip plugin: tracing endpoint not configured" id=io.containerd.tracing.processor.v1.otlp type=io.containerd.tracing.processor.v1
INFO[2026-02-23T19:28:31.199711624Z] loading plugin                                id=io.containerd.internal.v1.tracing type=io.containerd.internal.v1
INFO[2026-02-23T19:28:31.199723594Z] skip loading plugin                           error="skip plugin: tracing endpoint not configured" id=io.containerd.internal.v1.tracing type=io.containerd.internal.v1
INFO[2026-02-23T19:28:31.199732754Z] loading plugin                                id=io.containerd.ttrpc.v1.otelttrpc type=io.containerd.ttrpc.v1
INFO[2026-02-23T19:28:31.199742824Z] loading plugin                                id=io.containerd.grpc.v1.healthcheck type=io.containerd.grpc.v1
INFO[2026-02-23T19:28:31.200066074Z] serving...                                    address=/var/run/docker/containerd/containerd-debug.sock
INFO[2026-02-23T19:28:31.200158834Z] serving...                                    address=/var/run/docker/containerd/containerd.sock.ttrpc
INFO[2026-02-23T19:28:31.200226855Z] serving...                                    address=/var/run/docker/containerd/containerd.sock
INFO[2026-02-23T19:28:31.200254365Z] containerd successfully booted in 0.024543s  
INFO[2026-02-23T19:28:31.207104235Z] OTEL tracing is not configured, using no-op tracer provider 
INFO[2026-02-23T19:28:31.207267956Z] CDI directory does not exist, skipping: failed to monitor for changes: no such file or directory  dir=/etc/cdi
INFO[2026-02-23T19:28:31.207292026Z] CDI directory does not exist, skipping: failed to monitor for changes: no such file or directory  dir=/var/run/cdi
INFO[2026-02-23T19:28:31.223494391Z] Creating a containerd client                  address=/var/run/docker/containerd/containerd.sock timeout=1m0s
INFO[2026-02-23T19:28:31.228380279Z] Loading containers: start.                   
INFO[2026-02-23T19:28:31.228441189Z] NRI is disabled                              
INFO[2026-02-23T19:28:31.228453469Z] Starting daemon with containerd snapshotter integration enabled 
INFO[2026-02-23T19:28:31.231096563Z] Restoring containers: start.                 
INFO[2026-02-23T19:28:31.266538789Z] Deleting nftables IPv4 rules                  error="exit status 1"
INFO[2026-02-23T19:28:31.306574803Z] Deleting nftables IPv6 rules                  error="exit status 1"
INFO[2026-02-23T19:28:31.600315025Z] Loading containers: done.                    
INFO[2026-02-23T19:28:31.609782100Z] Docker daemon                                 commit=6bc6209 containerd-snapshotter=true storage-driver=overlayfs version=29.2.1
INFO[2026-02-23T19:28:31.609982871Z] Initializing buildkit                        
INFO[2026-02-23T19:28:31.646252358Z] Completed buildkit initialization            
INFO[2026-02-23T19:28:31.652395338Z] Daemon has completed initialization          
INFO[2026-02-23T19:28:31.652470278Z] API listen on /var/run/docker.sock           

sprite@poking-around:~$ docker ps
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES

Bingo! :bullseye: Give that a try.

13

Damn, did Claude understand how to do sprite check-pointing? That is pretty up-to-date, if so.

14

Yup, Sprites have a built-in sprite skill that tells them about the Sprite-specific things they can do (~/.claude/skills/sprite/SKILL.md).

15

:raising_hands: Noice!

16

Thanks all! :raising_hands: :partying_face:

17

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