Add production deployment: Dockerfile, docker-compose, deploy script

- Dockerfile: multi-stage build (golang:1.25-alpine → alpine:3.21), linux/amd64
- infra/mariadb: docker-compose + init SQL for reanimator DB/user
- infra/reanimator: docker-compose for reanimator-api (Gitea registry)
- deploy.sh: local build → push to git.mchus.pro → SSH deploy

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

infra/mariadb/docker-compose.yml

@@ -0,0 +1,17 @@
+services:
+  mariadb:
+    image: mariadb:11.4
+    container_name: mariadb
+    restart: unless-stopped
+    env_file: /appdata/mariadb/mariadb.env
+    ports:
+      - "3306:3306"
+    volumes:
+      - /appdata/mariadb/data:/var/lib/mysql
+      - /appdata/mariadb/init:/docker-entrypoint-initdb.d:ro
+    healthcheck:
+      test: ["CMD", "healthcheck.sh", "--connect", "--innodb_initialized"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 30s

infra/mariadb/init/01_reanimator.sql

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+CREATE DATABASE IF NOT EXISTS reanimator
+    CHARACTER SET utf8mb4
+    COLLATE utf8mb4_unicode_ci;
+
+CREATE USER IF NOT EXISTS 'reanimator'@'%' IDENTIFIED BY 'REANIMATOR_PASSWORD_PLACEHOLDER';
+
+GRANT ALL PRIVILEGES ON reanimator.* TO 'reanimator'@'%';
+
+FLUSH PRIVILEGES;

infra/mariadb/mariadb.env.example

@@ -0,0 +1,9 @@
+# Скопировать на сервер: /appdata/mariadb/mariadb.env
+# Заменить все значения на реальные
+
+MARIADB_ROOT_PASSWORD=changeme_root
+
+# Пользователь для reanimator (должен совпадать с паролем в init/01_reanimator.sql)
+MARIADB_USER=reanimator
+MARIADB_PASSWORD=changeme_reanimator
+MARIADB_DATABASE=reanimator

infra/reanimator/docker-compose.yml

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+services:
+  reanimator-api:
+    image: git.mchus.pro/reanimator/core:latest
+    container_name: reanimator-api
+    restart: unless-stopped
+    env_file: /appdata/reanimator/reanimator.env
+    ports:
+      - "9999:9999"
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://localhost:9999/health || exit 1"]
+      interval: 15s
+      timeout: 5s
+      retries: 3
+      start_period: 20s

infra/reanimator/reanimator.env.example

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+# Скопировать на сервер: /appdata/reanimator/reanimator.env
+
+HTTP_ADDR=:9999
+DATABASE_DSN=reanimator:PASSWORD@tcp(host.docker.internal:3306)/reanimator?parseTime=true
+MIGRATIONS_DIR=/app/migrations