A docker image to allow the launch of container in docker swarm, with options normally unavailable to swarm mode
The image uses docker-compose to start a new project (see LAUNCH_PROJECT_NAME). You can either use the environment variables to configure the service started inside, or you can supply your own /docker-compose.yml file.
Either way, swarm-launcher takes care of the setup, tear-down and cleanup of the project.
See Docs and Usage Examples
docker build -t swarm-launcher .
The following environment variables are important, if you plan on using a private repository:
| Variable |
|---|
LOGIN_USER |
LOGIN_PASSWORD |
LOGIN_REGISTRY |
The following environment variables are important if you don't supply a /docker-compose.yml file in the swarm-launcher container:
| Variable | Default | Mandatory | Description |
|---|---|---|---|
LAUNCH_IMAGE |
- | YES | The image for the container |
LAUNCH_PROJECT_NAME |
swarm-launcher |
NO | If you want to use a specific name for the project (similar to the stack name) |
LAUNCH_SERVICE_NAME |
random (by swarm-launcher) | NO | If you want to use a specific name for the service |
LAUNCH_CONTAINER_NAME |
random (by docker) | NO | If you want to use a specific name for the container (similar to the task name) |
LAUNCH_PRIVILEGED |
false |
NO | Set this to true if you want to start a privileged container |
LAUNCH_ENVIRONMENTS |
- | NO | Space separated list of Key=Value pairs. Note: @_@ gets replaced with a single whitespace, so you can expose environment values containing spaces. |
LAUNCH_DEVICES |
- | NO | Space separated list of DeviceOnHost:DeviceInContainer |
LAUNCH_VOLUMES |
- | NO | Space separated list of File/FolderOnHost:File/FolderInContainer |
LAUNCH_HOST_NETWORK |
false |
NO | Set this to true to start the container on the host network. This option is not compatible with LAUNCH_PORTS, LAUNCH_NETWORKS and LAUNCH_EXT_NETWORKS |
LAUNCH_PORTS |
- | NO | Space separated list of PortOnHost:PortInContainer |
LAUNCH_NETWORKS |
- | NO | Space separated list of project networks to create. All networks are created with attachable: true |
LAUNCH_EXT_NETWORKS |
- | NO | Space separated list of external networks to attach to |
LAUNCH_CAP_ADD |
- | NO | Space separated list of capabilities to add |
LAUNCH_CAP_DROP |
- | NO | Space separated list of capabilities to drop |
| `LAUNCH_SECURITY_OPT | - | NO | Space separated list of security options to add |
LAUNCH_LABELS |
ai.ix.started-by=ix.ai/swarm-launcher |
NO | Space separated list of Label=Value pairs |
LAUNCH_PULL |
false |
NO | Set this to true to check at every container start for the latest image version |
LAUNCH_SYSCTLS |
- | NO | Space separated list of sysctl=value |
LAUNCH_COMMAND |
- | NO | A string that overrides the default command |
LAUNCH_CGROUP_PARENT |
- | NO | A string that specify the parent cgroup for the container |
LAUNCH_STOP_GRACE_PERIOD |
10s (by docker) |
NO | Allows to override the default stop_grace_period. Note: It makes sense to also add a slightly higher stop_grace_period to the swarm-launcher stack as well! |
Note: Make sure you check out the documentation.
- GitLab: https://gitlab.com/ix.ai/swarm-launcher
- GitHub: https://github.com/ix-ai/swarm-launcher
- Docker Hub: https://hub.docker.com/r/ixdotai/swarm-launcher
This Docker image is inspired by the post by @akomelj in moby/moby#25885
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