Streamline Docker image build

Author: joschi

Dockerfile

@@ -1,18 +1,10 @@
-FROM maven:3.5-jdk-8-alpine as build
-WORKDIR /app
-COPY ./ /app
-RUN mvn install -q && \
-  mvn package -q && \
-  ls /app/target/ && \
-  MVN_VERSION=$(mvn -q \
-    -Dexec.executable="echo" \
-    -Dexec.args='${project.version}' \
-    --non-recursive \
-    org.codehaus.mojo:exec-maven-plugin:1.6.0:exec) && \
-  mv /app/target/openapi-diff-${MVN_VERSION}-jar-with-dependencies.jar /app/openapi-diff.jar
+FROM openjdk:8-jdk-alpine AS build
+WORKDIR /build
+COPY ./ /build
+RUN ./mvnw -V -B -ff -P cli package -q
 
 FROM openjdk:8-jre-alpine
 WORKDIR /app
-COPY --from=0 /app/openapi-diff.jar /app
+COPY --from=build /build/target/openapi-diff-jar-with-dependencies.jar /app/openapi-diff.jar
 ENTRYPOINT ["java", "-jar", "/app/openapi-diff.jar"]
 CMD ["--help"]

pom.xml

@@ -172,6 +172,37 @@
                 </plugins>
             </build>
         </profile>
+        <profile>
+            <id>cli</id>
+            <properties>
+                <maven.javadoc.skip>true</maven.javadoc.skip>
+                <maven.source.skip>true</maven.source.skip>
+            </properties>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-assembly-plugin</artifactId>
+                        <version>3.2.0</version>
+                        <configuration>
+                            <descriptorRefs>
+                                <descriptorRef>jar-with-dependencies</descriptorRef>
+                            </descriptorRefs>
+                            <finalName>${project.artifactId}</finalName>
+                        </configuration>
+                        <executions>
+                            <execution>
+                                <id>make-assembly</id>
+                                <phase>package</phase>
+                                <goals>
+                                    <goal>single</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
     </profiles>
     <build>
         <plugins>
@@ -233,19 +264,7 @@
                             <mainClass>com.qdesrame.openapi.diff.Main</mainClass>
                         </manifest>
                     </archive>
-                    <descriptorRefs>
-                        <descriptorRef>jar-with-dependencies</descriptorRef>
-                    </descriptorRefs>
                 </configuration>
-                <executions>
-                    <execution>
-                        <id>make-assembly</id>
-                        <phase>package</phase>
-                        <goals>
-                            <goal>single</goal>
-                        </goals>
-                    </execution>
-                </executions>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>