移除docker部署相关文件，更新readme和开发文档

system-admin/Dockerfile

@@ -1,23 +0,0 @@
-FROM eclipse-temurin:17-jre-alpine
-
-LABEL maintainer="weather-data"
-LABEL description="Weather Data System - Admin Service"
-
-RUN apk add --no-cache tzdata curl && \
-    cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && \
-    echo "Asia/Shanghai" > /etc/timezone
-
-WORKDIR /app
-
-EXPOSE 8080
-
-ARG JAR_FILE=target/system-admin.jar
-COPY ${JAR_FILE} /app/app.jar
-
-ENV JAVA_OPTS="-Xms256m -Xmx512m -XX:+UseG1GC -Djava.security.egd=file:/dev/./urandom"
-ENV SPRING_PROFILES_ACTIVE=prod
-
-HEALTHCHECK --interval=30s --timeout=10s --retries=3 --start-period=60s \
-  CMD curl -f http://localhost:8080/system-admin/actuator/health || exit 1
-
-ENTRYPOINT exec java ${JAVA_OPTS} -jar /app/app.jar