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accounted/docker-compose.caddy.yml
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YAML

# Optional TLS overlay. Adds a Caddy reverse proxy that auto-provisions
# Let's Encrypt certificates for ${DOMAIN}.
#
# Usage:
# 1. Set DOMAIN=app.example.com in .env (must resolve to this host's public IP)
# 2. Open ports 80 and 443 to the public internet (LE HTTP-01 challenge needs 80)
# 3. docker compose -f docker-compose.yml -f docker-compose.caddy.yml up -d
#
# Caddy reaches the app over the internal Docker network; the app no longer
# binds a host port at all.
services:
app:
# Remove the loopback binding from the base file: traffic comes via Caddy.
ports: !reset null
caddy:
image: caddy:2-alpine@sha256:86deaf5e3d3408a6ccec08fbb79989783dd26e206ae10bcf78a801dc8c9ab794
depends_on:
app:
condition: service_healthy
ports:
- "80:80"
- "443:443"
volumes:
- ./docker/Caddyfile:/etc/caddy/Caddyfile:ro
- caddy_data:/data
- caddy_config:/config
environment:
- DOMAIN=${DOMAIN:?set DOMAIN in .env to enable TLS}
restart: unless-stopped
security_opt:
- no-new-privileges:true
cap_drop:
- ALL
# Caddy needs NET_BIND_SERVICE to bind privileged ports 80/443.
cap_add:
- NET_BIND_SERVICE
read_only: true
tmpfs:
- /tmp
mem_limit: 256m
pids_limit: 50
logging:
driver: json-file
options:
max-size: "10m"
max-file: "5"
volumes:
caddy_data:
caddy_config: