halkyon/deploy/compose.yaml
Tizian 「ティツィアーン」 4c2a363160
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ci: check the generated code; deploy: migrate before the switch
Two of Serverpod's own conventions, as its v4 project template and roles have them.

CI now runs `serverpod generate` (CLI pinned to the server's Serverpod version, like
the template's workflow) and fails if the committed generated code differs from its
output, so a model or endpoint changed without regenerating can't reach main. Checked in
a clean clone: today's code passes, a committed stale generated file fails.

redeploy.sh now applies the migrations in a run of their own, with Serverpod's
maintenance role (--role=maintenance --apply-migrations), after the dump and before
switching to the new server. That run exits with 0 only if the migrations worked, and
each migration is one transaction, so a failing one stops the deploy while the old
server keeps serving; before, the new server applied them at start and would have
crash-looped. Tested on the local stack: a deploy through the new step, and a failing
run (wrong database password) that exits with 1 after six attempts. AGENTS.md says
migrations must keep the old server working until the switch.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
2026-09-30 22:55:24 +02:00

83 lines
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YAML

# The Halkyon Learn instance: Caddy in front, the Serverpod server, PostgreSQL.
#
# cd deploy
# cp .env.example .env && chmod 600 .env # then fill in the secrets
# docker compose up -d --build
#
# Only Caddy publishes ports. Docker opens published ports directly in the kernel's
# packet filter, past ufw, and the Serverpod server listens on every interface, so the
# server and Postgres publish nothing: they're reachable only inside this project's
# network, where Caddy finds the server by its service name.
name: halkyon-learn
# Logs go to the host's journal, whose size and age limits apply (journald.conf).
x-logging: &logging
driver: journald
services:
caddy:
image: caddy:2
restart: unless-stopped
ports:
- "80:80"
- "443:443"
- "443:443/udp" # HTTP/3
environment:
# `learn.halkyon.eu` on sahaquiel (automatic Let's Encrypt certificate);
# `http://localhost` for the local rehearsal (plain HTTP, no certificate).
DOMAIN: ${DOMAIN:?set DOMAIN in deploy/.env}
volumes:
- ./Caddyfile:/etc/caddy/Caddyfile:ro
- caddy_data:/data # certificates: must survive restarts (rate limits)
- caddy_config:/config
depends_on:
- server
logging: *logging
server:
build:
context: ..
dockerfile: halkyon_learn_server/Dockerfile
image: halkyon-learn-server
restart: unless-stopped
# Applies pending migrations at every start, then serves. One instance only, so
# no two servers ever migrate at once. (On learn.halkyon.eu, deploy/redeploy.sh has
# applied them in a run of their own before, so nothing is left to do here.)
command: ["--apply-migrations"]
environment:
SERVERPOD_DATABASE_PASSWORD: ${POSTGRES_PASSWORD:?set POSTGRES_PASSWORD in deploy/.env}
SERVERPOD_PASSWORD_serverSideSessionKeyHashPepper: ${SESSION_KEY_HASH_PEPPER:?set SESSION_KEY_HASH_PEPPER in deploy/.env}
# GitHub sign-in, only with this instance's GitHub OAuth app; empty: off.
SERVERPOD_PASSWORD_githubClientId: ${GITHUB_CLIENT_ID:-}
SERVERPOD_PASSWORD_githubClientSecret: ${GITHUB_CLIENT_SECRET:-}
# Where the source of what this instance runs is; empty: the project's.
SOURCE_URL: ${SOURCE_URL:-}
depends_on:
postgres:
condition: service_healthy
logging: *logging
postgres:
image: postgres:16
restart: unless-stopped
# The server's session is UTC anyway (the driver sets it); this makes the
# database's own default UTC too, for psql, COPY loads and future sidecars.
command: ["postgres", "-c", "timezone=UTC", "-c", "log_timezone=UTC"]
environment:
POSTGRES_USER: halkyon_learn
POSTGRES_DB: halkyon_learn
POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?set POSTGRES_PASSWORD in deploy/.env}
volumes:
- postgres_data:/var/lib/postgresql/data
healthcheck:
test: ["CMD-SHELL", "pg_isready -U halkyon_learn -d halkyon_learn"]
interval: 5s
timeout: 5s
retries: 12
logging: *logging
volumes:
caddy_data:
caddy_config:
postgres_data: