Simplify docker build. Just docker build .

Dockerfile

@@ -0,0 +1,27 @@
+FROM maven:3-jdk-8 as build
+WORKDIR /app
+
+COPY pom.xml .
+
+# Run maven build & remove artifacts to cache downloaded dependencies until pom.xml changes
+RUN mvn clean package -Dmaven.main.skip -Dmaven.test.skip && rm -r target
+
+# Copy all files with extensions (i.e. skip Dockerfile, Makefile)
+COPY *.* ./
+
+# Build for real
+RUN mvn clean package -Dmaven.test.skip
+
+FROM java:8
+
+LABEL maintainer="Miguel Garcia Puyol <[email protected]>"
+
+WORKDIR /var/app
+
+COPY --from=build /app/target/zkui-*-jar-with-dependencies.jar /var/app/zkui.jar
+ADD config.cfg /var/app/config.cfg
+ADD bootstrap.sh /var/app/bootstrap.sh
+
+ENTRYPOINT ["/var/app/bootstrap.sh"]
+
+EXPOSE 9090

Makefile

@@ -6,12 +6,7 @@ VERSION=2.0-SNAPSHOT
 all: build publish
 
 build:
-	mvn clean install
-	cp config.cfg docker
-	cp target/$(NAME)-*-jar-with-dependencies.jar docker
-	docker build -t $(NAME):$(VERSION) --no-cache --rm docker
-	rm docker/$(NAME)-*.jar
-	rm docker/config.cfg
+	docker build -t $(NAME):$(VERSION) .
 
 publish:
 	docker tag $(NAME):$(VERSION) $(NAME):$(VERSION)