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Migrate from Docker Compose to Docker Swarm for zero-downtime deploys
Convert docker-compose.yml to Swarm-compatible format (deploy sections
instead of restart/mem_limit/cpus, image references instead of build,
removed depends_on). Web service uses start-first rolling updates;
workers use stop-first. Add deploy.sh script and GitHub Actions workflow
that auto-deploys on push to main via SSH.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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-38
+21
.github/workflows/deploy.yml
+21
.github/workflows/deploy.yml
···
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name: Deploy
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+
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on:
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push:
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branches: [main]
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concurrency:
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group: deploy
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cancel-in-progress: false
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+
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jobs:
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deploy:
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runs-on: ubuntu-latest
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steps:
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- name: Deploy via SSH
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uses: appleboy/ssh-action@v1
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with:
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host: ${{ secrets.DEPLOY_HOST }}
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username: ${{ secrets.DEPLOY_USER }}
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key: ${{ secrets.DEPLOY_SSH_KEY }}
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script: cd ${{ secrets.DEPLOY_PATH }} && ./deploy.sh
+16
deploy.sh
+16
deploy.sh
···
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#!/usr/bin/env bash
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set -euo pipefail
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cd "$(dirname "$0")"
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echo "Pulling latest code..."
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git pull origin main
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echo "Building image..."
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docker build -t favs-blue:latest .
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echo "Deploying stack..."
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docker stack deploy -c docker-compose.yml favs-blue
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echo "Deploy complete. Watching service updates..."
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docker stack services favs-blue
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docker-compose.yml
+48
-38
docker-compose.yml
···
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services:
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clickhouse:
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image: clickhouse/clickhouse-server:26.2
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-
restart: unless-stopped
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ports:
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- "8123:8123"
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volumes:
···
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CLICKHOUSE_DB: favs
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CLICKHOUSE_USER: favs
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CLICKHOUSE_PASSWORD: ${CLICKHOUSE_PASSWORD}
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ulimits:
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-
nofile: 262144
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-
mem_limit: 4g
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cpus: 2
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deploy:
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restart_policy:
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condition: any
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resources:
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limits:
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memory: 4G
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cpus: "2"
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logging: *default-logging
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healthcheck:
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test: ["CMD", "wget", "-qO-", "http://localhost:8123/ping"]
···
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start_period: 5s
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migrate:
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build: .
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image: favs-blue:latest
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command: sh -c "node ace.js migration:run --force && node ace.js clickhouse:migrate"
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depends_on:
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clickhouse:
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condition: service_healthy
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volumes:
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- sqlite-data:/data
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mem_limit: 512m
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cpus: 0.5
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deploy:
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restart_policy:
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condition: on-failure
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resources:
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limits:
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memory: 512M
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cpus: "0.5"
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logging: *default-logging
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environment:
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<<: *common-env
···
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67
OTEL_EXPORTER_OTLP_HEADERS: ""
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web:
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restart: unless-stopped
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build: .
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image: favs-blue:latest
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command: node bin/server.js
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depends_on:
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clickhouse:
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condition: service_healthy
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migrate:
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condition: service_completed_successfully
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volumes:
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- sqlite-data:/data
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-
mem_limit: 1536m
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-
cpus: 1
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deploy:
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restart_policy:
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condition: any
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update_config:
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order: start-first
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failure_action: rollback
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resources:
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limits:
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+
memory: 1536M
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cpus: "1"
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logging: *default-logging
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environment:
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<<: *common-env
···
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start_period: 10s
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jetstream-worker:
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-
restart: unless-stopped
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-
build: .
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+
image: favs-blue:latest
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command: node ace.js jetstream:consume
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stop_grace_period: 30s
99
-
depends_on:
100
-
clickhouse:
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-
condition: service_started
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-
migrate:
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-
condition: service_completed_successfully
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volumes:
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- sqlite-data:/data
106
-
mem_limit: 512m
107
-
cpus: 0.5
106
+
deploy:
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+
restart_policy:
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+
condition: any
109
+
update_config:
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+
order: stop-first
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+
failure_action: rollback
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+
resources:
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+
limits:
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+
memory: 512M
115
+
cpus: "0.5"
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logging: *default-logging
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healthcheck:
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test: ["CMD", "node", "-e", "process.exit(0)"]
···
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126
OTEL_SERVICE_NAME: favs-blue-jetstream
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127
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queue-worker:
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restart: unless-stopped
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build: .
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+
image: favs-blue:latest
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command: node ace.js queue:work
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-
depends_on:
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-
clickhouse:
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-
condition: service_started
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-
migrate:
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-
condition: service_completed_successfully
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volumes:
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- sqlite-data:/data
131
-
mem_limit: 1g
132
-
cpus: 0.5
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+
deploy:
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+
restart_policy:
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condition: any
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+
update_config:
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order: stop-first
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+
failure_action: rollback
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+
resources:
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+
limits:
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+
memory: 1G
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cpus: "0.5"
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logging: *default-logging
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healthcheck:
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test: ["CMD", "node", "-e", "process.exit(0)"]