Improved build/docker process

Author: tusan

.dockerignore

@@ -21,3 +21,7 @@
 
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
+
+.idea
+.gradle
+build

.gitignore

@@ -54,4 +54,11 @@ jar {
 
     archiveName = "app.jar"
     from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
+}
+
+build.doLast {
+    copy {
+        from 'build/libs/app.jar'
+        into "docker"
+    }
 }

Dockerfile

@@ -0,0 +1,8 @@
+FROM openjdk:8-jdk
+
+COPY app.jar /src/app.jar
+WORKDIR /src/
+RUN ls
+EXPOSE 8080
+
+CMD ["java", "-jar", "app.jar"]