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docker-stack.yml
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docker-stack.yml
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version: '3.7'
# Define services
services:
# App Service
app:
# Configuration for building the docker image for the service
image: callicoder/swarm-demo-app:1.0.0
ports:
- "8080:8080" # Forward the exposed port 8080 on the container to port 8080 on the host machine
deploy:
replicas: 3
resources:
limits:
cpus: "0.2"
memory: 50M
restart_policy:
condition: on-failure
environment: # Pass environment variables to the service
REDIS_URL: redis:6379
depends_on:
- redis
networks: # Networks to join (Services on the same network can communicate with each other using their name)
- webnet
# Redis Service
redis:
image: redis:alpine
ports:
- "6379:6379"
networks:
- webnet
deploy:
replicas: 1
restart_policy:
condition: on-failure
placement:
constraints: [node.role == manager]
networks:
webnet:
driver: overlay
attachable: true