Add self-contained Docker Compose stacks for pivoine.art infrastructure

Migrated 11 services from monolithic docker-compose project into independent stacks,
each with dedicated databases, minimal .env configuration, and bind-mount data volumes.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

joplin/compose.yml

@@ -0,0 +1,59 @@
+---
+services:
+  joplin:
+    image: joplin/server:latest
+    container_name: joplin
+    environment:
+      TZ: ${TIMEZONE:-Europe/Amsterdam}
+      APP_PORT: 22300
+      APP_BASE_URL: https://${TRAEFIK_HOST}
+      DB_CLIENT: pg
+      POSTGRES_HOST: joplin_db
+      POSTGRES_PORT: 5432
+      POSTGRES_DATABASE: joplin
+      POSTGRES_USER: joplin
+      POSTGRES_PASSWORD: joplin
+      MAILER_ENABLED: 1
+      MAILER_HOST: mailpit
+      MAILER_PORT: 1025
+      MAILER_SECURE: 0
+    depends_on:
+      db:
+        condition: service_healthy
+    restart: always
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.middlewares.joplin-redirect-web-secure.redirectscheme.scheme=https"
+      - "traefik.http.routers.joplin-web.middlewares=joplin-redirect-web-secure"
+      - "traefik.http.routers.joplin-web.rule=Host(`${TRAEFIK_HOST}`)"
+      - "traefik.http.routers.joplin-web.entrypoints=web"
+      - "traefik.http.routers.joplin-web-secure.rule=Host(`${TRAEFIK_HOST}`)"
+      - "traefik.http.routers.joplin-web-secure.tls.certresolver=resolver"
+      - "traefik.http.routers.joplin-web-secure.entrypoints=web-secure"
+      - "traefik.http.routers.joplin-web-secure.middlewares=security-headers@file"
+      - "traefik.http.services.joplin-web-secure.loadbalancer.server.port=22300"
+      - "traefik.docker.network=${NETWORK_NAME}"
+      - "com.centurylinklabs.watchtower.enable=true"
+    networks:
+      - compose_network
+  db:
+    image: postgres:16-alpine
+    container_name: joplin_db
+    environment:
+      POSTGRES_DB: joplin
+      POSTGRES_USER: joplin
+      POSTGRES_PASSWORD: joplin
+    volumes:
+      - ../.data/joplin/db:/var/lib/postgresql/data
+    restart: always
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U $${POSTGRES_USER} -d $${POSTGRES_DB}"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+    networks:
+      - compose_network
+networks:
+  compose_network:
+    name: ${NETWORK_NAME}
+    external: true