A template docker-compose file for Vapor apps

docker-compose.dev.yml

version: "3.7"

x-common: &common
  environment:
    SHARED_ENV_VAR1: 'value'
    SHARED_ENV_VAR2: 'value'

services:
  vapor_app: # name this whatever you want
    <<: *common
    image: vapor_app:latest
    command: ./Run serve --env docker --hostname 0.0.0.0 --port 80 # --log trace
    build:
      context: . # means the Dockerfile is in the same folder as this docker-compose file.
      args:
        env: docker
    depends_on:
      - postgres
    ports:
      - '8080:80'

  migrator:
    <<: *common
    image: vapor_app:latest
    command: /bin/bash -c "echo 'y' | ./Run migrate"
    depends_on:
      - postgres
      - vapor_app
    deploy:
      replicas: 1 # starts up automatically when swarm is started. Set to 0 to require it to be spun up manually.
      restart_policy:
        condition: on-failure
        delay: 5s
        max_attempts: 10

  postgres:
    image: postgres:11.5-alpine
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres
    ports:
      - '5434:5432'

##
## Setup
## - Put this file into the same folder as your Dockerfile and name it 'docker-compose.dev.yml'
##

##
## Building
## - Ensure you have a Dockerfile (the Vapor 4 API template ships with one).
## - If you are using the Dockerfile from the Vapor 4 API template, rename it
##    from 'web.Dockerfile' to just 'Dockerfile' and change the last line
##    from `ENTRYPOINT ./Run ...` to `CMD ./Run ...`
## - Start your Docker daemon (e.g. Docker for Mac).
## - From this folder, run `docker-compose -f docker-compose.dev.yml build`.
##

##
## Deploying as Swarm
## - Ensure your Docker Daemon is running (e.g. Docker for Mac).
## - Run `docker swarm init` (only needed once)
## - Run `docker stack up -c docker-compose.dev.yml test`
## - See service status: `docker service ls`
## - See service logs for vapor app: `docker service logs -f test_vapor_app`
## - Your app is at `http://127.0.0.1:8080` (or `http://localhost:8080`)
##

##
## Bringing things down
## - Run `docker stack rm test`
##