Add Guide to install Kestra with Coolify and/or Dokploy

[yureckey]

Describe what's missing in our docs

Several services make the life of a developer (who isn't a pro in DevOps) much more manageable, simplifying self-host a lot. Coolify is among the most popular. Dokploy is newer but also gained some traction.
https://coolify.io - "An open-source & self-hostable Heroku / Netlify / Vercel alternative."
https://dokploy.com - "free alternative self-hostable solution to platforms like Heroku, Vercel, and Netlify"
They allow to use Docker Compose directly or as the predefined "App" Templates. Would be great to have a guide to install Kestra in these services. (or even better - to have app template)

[wrussell1999]

PRs made!

coollabsio/coolify#5518
Dokploy/templates#58

[wrussell1999]

Trying again: coollabsio/coolify#5527 and coollabsio/coolify#5528

[yureckey]

As I wrote in slack thread:

Thanks!
But it's a bit more work than using sample docker compose. I've tried it and it's not working.

[yureckey]

ok, I've tried recent version on Dokploy:

volumes:
  postgres-data:
    driver: local
  kestra-data:
    driver: local

services:
  postgres:
    image: postgres
    volumes:
      - postgres-data:/var/lib/postgresql/data
    environment:
      POSTGRES_DB: kestra
      POSTGRES_USER: kestra
      POSTGRES_PASSWORD: k3str4
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -d $${POSTGRES_DB} -U $${POSTGRES_USER}"]
      interval: 30s
      timeout: 10s
      retries: 10

  kestra:
    image: kestra/kestra:latest
    pull_policy: always
    # Note that this setup with a root user is intended for development purpose.
    # Our base image runs without root, but the Docker Compose implementation needs root to access the Docker socket
    # To run Kestra in a rootless mode in production, see: https://kestra.io/docs/installation/podman-compose
    user: "root"
    command: server standalone
    volumes:
      - kestra-data:/app/storage
      - /var/run/docker.sock:/var/run/docker.sock
      - /tmp/kestra-wd:/tmp/kestra-wd
    environment:
      KESTRA_CONFIGURATION: |
        datasources:
          postgres:
            url: jdbc:postgresql://postgres:5432/kestra
            driverClassName: org.postgresql.Driver
            username: kestra
            password: k3str4
        kestra:
          server:
            basicAuth:
              enabled: false
              username: "dummy@mail.com"
              password: passpass
          repository:
            type: postgres
          storage:
            type: local
            local:
              basePath: "/app/storage"
          queue:
            type: postgres
          tasks:
            tmpDir:
              path: /tmp/kestra-wd/tmp
          url: http://localhost:8080/
    ports:
      - "8080"
      - "8081"
    depends_on:
      postgres:
        condition: service_started

It did built deploy, no errors, then I added domain (autogenerated), set it to kestra container, 8080 port, but it didn't showed anything. "page not found". Then I tried to redeploy and kestra container only shows error from now on:

Message: Failed to initialize pool: The connection attempt failed.
04/03/25, 05:24:10 PM
info
Path Taken: DatasourceFactory.dataSource(DatasourceConfiguration datasourceConfiguration)
04/03/25, 05:24:10 PM
info
at io.micronaut.context.DefaultBeanContext.resolveByBeanFactory(DefaultBeanContext.java:2349)
04/03/25, 05:24:10 PM
info
at io.micronaut.context.DefaultBeanContext.doCreateBean(DefaultBeanContext.java:2304)
04/03/25, 05:24:10 PM
info
at io.micronaut.context.DefaultBeanContext.doCreateBean(DefaultBeanContext.java:2316)
04/03/25, 05:24:10 PM
info
at io.micronaut.context.DefaultBeanContext.createRegistration(DefaultBeanContext.java:3127)
04/03/25, 05:24:10 PM
info
at io.micronaut.context.SingletonScope.getOrCreate(SingletonScope.java:80)
04/03/25, 05:24:10 PM
info
at io.micronaut.context.DefaultBeanContext.findOrCreateSingletonBeanRegistration(DefaultBeanContext.java:3029)
04/03/25, 05:24:10 PM
info
at io.micronaut.context.DefaultBeanContext.initializeEagerBean(DefaultBeanContext.java:2693)
04/03/25, 05:24:10 PM
info
at io.micronaut.context.DefaultBeanContext.initializeContext(DefaultBeanContext.java:1994)
04/03/25, 05:24:10 PM
info
... 7 more
04/03/25, 05:24:10 PM
error
Caused by: com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: The connection attempt failed.
04/03/25, 05:24:10 PM
info
at com.zaxxer.hikari.pool.HikariPool.throwPoolInitializationException(HikariPool.java:602)
04/03/25, 05:24:10 PM
info
at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:589)
04/03/25, 05:24:10 PM
info
at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:99)
04/03/25, 05:24:10 PM
info
at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:80)
04/03/25, 05:24:10 PM
info
at io.micronaut.configuration.jdbc.hikari.HikariUrlDataSource.<init>(HikariUrlDataSource.java:35)
04/03/25, 05:24:10 PM
info
at io.micronaut.configuration.jdbc.hikari.DatasourceFactory.dataSource(DatasourceFactory.java:69)
04/03/25, 05:24:10 PM
info
at io.micronaut.configuration.jdbc.hikari.$DatasourceFactory$DataSource0$Definition.instantiate(Unknown Source)
04/03/25, 05:24:10 PM
info
at io.micronaut.context.BeanDefinitionDelegate.instantiate(BeanDefinitionDelegate.java:170)
04/03/25, 05:24:10 PM
info
at io.micronaut.context.DefaultBeanContext.resolveByBeanFactory(DefaultBeanContext.java:2334)