feat: Add Docker setup with environment variable configuration

Dockerfile

@@ -0,0 +1,21 @@
+# Сборка приложения
+FROM maven:3.8.6-openjdk-11 AS build
+WORKDIR /app
+COPY pom.xml .
+COPY src ./src
+RUN mvn clean package -DskipTests
+
+# Запуск приложения
+FROM openjdk:11-jre-slim
+WORKDIR /app
+COPY --from=build /app/target/*.jar app.jar
+
+# Переменные окружения для конфигурации
+ENV SPRING_DATASOURCE_URL=${DB_URL}
+ENV SPRING_DATASOURCE_USERNAME=${DB_USER}
+ENV SPRING_DATASOURCE_PASSWORD=${DB_PASSWORD}
+ENV BOT_TOKEN=${BOT_TOKEN}
+ENV BOT_NAME=${BOT_NAME}
+
+EXPOSE 8080
+ENTRYPOINT ["java","-jar","app.jar"]