增加pigx-code模块，使用dynamic-datasource实现多数据源

pigx-visual/pigx-code/Dockerfile

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+FROM anapsix/alpine-java:8_server-jre_unlimited
+
+MAINTAINER wangiegie@gmail.com
+
+RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
+
+RUN mkdir -p /pigx-code
+
+WORKDIR /pigx-code
+
+EXPOSE 5003
+
+ADD ./pigx-visual/pigx-code/target/pigx-code.jar ./
+
+CMD sleep 120;java -Xms128m -Xmx256m -Djava.security.egd=file:/dev/./urandom -jar pigx-code.jar