docker: add traefik support

docker/docker-compose-traefik.yaml

@@ -0,0 +1,136 @@
+services:
+  chatmail:
+    build:
+      context: ./docker
+      dockerfile: chatmail_relay.dockerfile
+      tags:
+        - chatmail-relay:latest
+    image: chatmail-relay:latest
+    restart: unless-stopped
+    container_name: chatmail
+    depends_on:
+      - traefik-certs-dumper
+    cgroup: host # required for systemd
+    tty: true # required for logs
+    tmpfs: # required for systemd
+      - /tmp
+      - /run
+      - /run/lock
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "3"
+    environment: #all possible variables you can check inside README and /chatmaild/src/chatmaild/ini/chatmail.ini.f
+      MAIL_DOMAIN: $MAIL_DOMAIN
+      # MAX_MESSAGE_SIZE: "50M"
+      # DEBUG_COMMANDS_ENABLED: "true"
+      # FORCE_REINIT_INI_FILE: "true"
+      # RECREATE_VENV: "false"
+      USE_FOREIGN_CERT_MANAGER: "true"
+      CHANGE_KERNEL_SETTINGS: "false"
+      PATH_TO_SSL: "${CERTS_ROOT_DIR_CONTAINER}/${MAIL_DOMAIN}"
+      ENABLE_CERTS_MONITORING: "true"
+      # CERTS_MONITORING_TIMEOUT: 60
+      # IS_DEVELOPMENT_INSTANCE: "true"
+    ports:
+      - "25:25"
+      - "587:587"
+      - "143:143"
+      - "465:465"
+      - "993:993"
+    volumes:
+      ## system
+      - /sys/fs/cgroup:/sys/fs/cgroup:rw # required for systemd
+      - ./:/opt/chatmail
+      - ${CERTS_ROOT_DIR_HOST}:${CERTS_ROOT_DIR_CONTAINER}:ro
+
+      ## data
+      - ./data/chatmail:/home
+      # - ./data/chatmail-dkimkeys:/etc/dkimkeys
+      # - ./data/chatmail-echobot:/run/echobot
+      # - ./data/chatmail-acme:/var/lib/acme
+
+      ## custom resources
+      # - ./custom/www/src/index.md:/opt/chatmail/www/src/index.md
+
+      ## debug
+      # - ./docker/files/setup_chatmail_docker.sh:/setup_chatmail_docker.sh
+      # - ./docker/files/entrypoint.sh:/entrypoint.sh
+      # - ./docker/files/update_ini.sh:/update_ini.sh
+
+    labels:
+      - traefik.enable=true
+      - traefik.http.services.chatmail-relay.loadbalancer.server.scheme=https
+      - traefik.http.services.chatmail-relay.loadbalancer.server.port=443
+      - traefik.http.services.chatmail-relay.loadbalancer.serverstransport=insecure@file
+      - traefik.http.routers.chatmail-relay.rule=Host(`${MAIL_DOMAIN}`) || Host(`mta-sts.${MAIL_DOMAIN}`) || Host(`www.${MAIL_DOMAIN}`)
+      - traefik.http.routers.chatmail-relay.service=chatmail-relay
+      - traefik.http.routers.chatmail-relay.tls=true
+      - traefik.http.routers.chatmail-relay.tls.certresolver=letsEncrypt
+
+  traefik_init:
+    image: alpine:latest
+    restart: on-failure
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "3"
+    working_dir: /app
+    entrypoint: sh -c '
+      touch acme.json &&
+      chown 0:0 ./acme.json &&
+      chmod 600 ./acme.json'
+    volumes:
+      - ./traefik/data:/app
+
+  traefik:
+    image: traefik:v3.3
+    container_name: traefik
+    restart: unless-stopped
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "3"
+    command:
+      - "--configFile=/config.yaml"
+      - "--certificatesresolvers.letsEncrypt.acme.email=${ACME_EMAIL}"
+    # ports:
+    #   - "80:80"
+    #   - "443:443"
+    network_mode: host
+    depends_on:
+      traefik_init:
+        condition: service_completed_successfully
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+      - ./traefik/config.yaml:/config.yaml
+      - ./traefik/data/acme.json:/acme.json
+      - ./traefik/dynamic-configs:/dynamic/conf
+
+  traefik-certs-dumper:
+    image: ldez/traefik-certs-dumper:v2.10.0
+    restart: unless-stopped
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "3"
+    depends_on:
+      - traefik
+    entrypoint: sh -c '
+      apk add openssl &&
+      while ! [ -e /data/acme.json ]
+      || ! [ `jq ".[] | .Certificates | length" /data/acme.json | jq -s "add" ` != 0 ]; do
+      sleep 1
+      ; done
+      && traefik-certs-dumper file --version v3 --watch --domain-subdir=true
+      --source /data/acme.json --dest /data/letsencrypt/certs --post-hook "sh /post-hook.sh"'
+    environment:
+      CERTS_DIR: /data/letsencrypt/certs
+    volumes:
+      - ./traefik/data/letsencrypt:/data/letsencrypt
+      - ./traefik/data/acme.json:/data/acme.json
+      - ./traefik/post-hook.sh:/post-hook.sh

docker/example.env

@@ -1 +1,5 @@
 MAIL_DOMAIN="chat.example.com"
+ACME_EMAIL="my.email@gmail.com"
+
+CERTS_ROOT_DIR_HOST="./traefik/data/letsencrypt/certs"
+CERTS_ROOT_DIR_CONTAINER="/var/lib/acme/live"

docker/files/entrypoint.sh

@@ -3,6 +3,19 @@ set -eo pipefail
 
 unlink /etc/nginx/sites-enabled/default || true
 
+if [ "${USE_FOREIGN_CERT_MANAGER,,}" == "true" ]; then
+    if [ ! -f "$PATH_TO_SSL/fullchain" ]; then
+        echo "Error: file '$PATH_TO_SSL/fullchain' does not exist. Exiting..." > /dev/stderr
+        sleep 2
+        exit 1
+    fi
+    if [ ! -f "$PATH_TO_SSL/privkey" ]; then
+        echo "Error: file '$PATH_TO_SSL/privkey' does not exist. Exiting..." > /dev/stderr
+        sleep 2
+        exit 1
+    fi
+fi
+
 SETUP_CHATMAIL_SERVICE_PATH="${SETUP_CHATMAIL_SERVICE_PATH:-/lib/systemd/system/setup_chatmail.service}"
 
 env_vars=$(printenv | cut -d= -f1 | xargs)