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Feature/docker watchtower deployment #8

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2f874c5
docs: Add setup instructions to deploy on GCP with Watchtower
Lachlan-C Sep 24, 2022
61cfc04
feat: Add custom watchtower deployment
Lachlan-C Sep 24, 2022
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12 changes: 12 additions & 0 deletions GCP-WATCHTWER-DEPLOYMENT.md
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# OnTrack Deployment on GCP with Watchtower

Watchtower is a container based solution for automating docker container base image updates.
[Watchtower Documentation](https://containrrr.dev/watchtower/)

## Steps

1. Create a VM within GCP Compute Engine section
2. ssh into machine
3. Update machine `sudo apt update && sudo apt upgrade -y`
4. Install Docker by following the steps to install docker and docker compose with the convenience script on at [this link](https://docs.docker.com/engine/install/debian/#install-using-the-convenience-script).
5. Follow the steps in the DEPLOYING.md file to complete the setup but instead of using the `docker compose up` command use the `docker compose -f docker-compose-watchtower.yml up`.
97 changes: 97 additions & 0 deletions production/docker-compose-watchtower.yml
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version: '3.8'

networks:
backnet:
frontnet:

services:

# This is the proxy which receives all http requests and forwards to relevant servers.
proxy:
image: nginx:mainline-alpine
container_name: proxy
ports:
- 80:80
- 443:443
depends_on:
- webserver
- apiserver
networks:
- frontnet
- backnet
volumes:
- ./shared-files/proxy-nginx.conf:/etc/nginx/nginx.conf
- ./localhost.crt:/etc/nginx/cert.crt # replace with real certificate
- ./localhost.key:/etc/nginx/key.key # replace with real key
restart: on-failure:5

# Web server hosts the static files
webserver:
image: lmsdoubtfire/doubtfire-web:latest
ports:
- 8080:8080
networks:
- backnet
restart: on-failure:5

# API server runs the rails project
apiserver:
image: lmsdoubtfire/apiserver:latest
env_file:
- .env.production
ports:
- 3000:3000
networks:
- backnet
depends_on:
- doubtfire-db
volumes:
- student_work:/student-work # Adjust path to where student data should be stored
- doubtfire_logs:/doubtfire/log
- ./shared-files:/shared-files
- ./shared-files/aliases:/etc/aliases:ro
command: /bin/bash -c "bundle exec rails s -b 0.0.0.0"
restart: on-failure:5

# Database server - could be external to docker
doubtfire-db:
image: mariadb:latest
restart: always
networks:
- backnet
environment:
MARIADB_RANDOM_ROOT_PASSWORD: "true"
MARIADB_USER: dfire # Update with mariadb username
MARIADB_PASSWORD: pwd # Update with mariadb password
MARIADB_DATABASE: doubtfire # Update with mariadb database name
volumes:
- mysql_db:/var/lib/mysql

# Automated generation of PDFs using cron
pdfgen:
image: lmsdoubtfire/appserver:latest
env_file:
- .env.production
networks:
- backnet
depends_on:
- doubtfire-db
volumes:
- student_work:/student-work # Update with path to student work
- ./shared-files:/shared-files
- ./shared-files/aliases:/etc/aliases:ro
- doubtfire_logs:/doubtfire/log
command:
/bin/bash -c "newaliases; cp /shared-files/msmtprc /etc; /doubtfire/entry_point.sh"
restart: on-failure:5

# watchtower keeps all docker containers up to date with latest on dockerhub
watchtower:
image: containrrr/watchtower
volumes:
- /var/run/docker.sock:/var/run/docker.sock

volumes:
doubtfire_logs: {}
mysql_db: {}
student_work: {}