added maven compile into dockerfile

Author: echoesian

Dockerfile

@@ -1,4 +1,15 @@
+# setup working directory
+FROM maven AS build
+RUN mkdir /app
+WORKDIR /app
+
+# maven build
+COPY src /app/src
+COPY pom.xml /app
+RUN mvn -f /app/pom.xml clean package
+
+# deploy to tomcat
 FROM tomcat 
-COPY target/simplewebapp.war /usr/local/tomcat/webapps
+COPY --from=build app/target/simplewebapp.war /usr/local/tomcat/webapps
 EXPOSE 8080
 CMD ["catalina.sh", "run"]

Dockerfile.bak

@@ -0,0 +1,4 @@
+FROM tomcat 
+COPY target/simplewebapp.war /usr/local/tomcat/webapps
+EXPOSE 8080
+CMD ["catalina.sh", "run"]