Added dockerfile.

Dockerfile

@@ -0,0 +1,15 @@
+FROM openjdk:8-jre
+
+EXPOSE 8080
+EXPOSE 8081
+
+COPY target/lib /usr/share/signal/lib
+
+ARG CONFIG_FILE
+COPY config/${CONFIG_FILE} /usr/share/signal/config.yml
+
+ARG JAR_FILE
+COPY target/${JAR_FILE} /usr/share/signal/Signal-Service.jar
+
+ENTRYPOINT ["/usr/bin/java", "-server", "-Djava.awt.headless=true", "-Xmx2048m", "-Xss512k", "-jar", "/usr/share/signal/Signal-Service.jar", "server", "/usr/share/signal/config.yml"]
+

pom.xml

@@ -279,7 +279,23 @@
                     </execution>
                 </executions>
             </plugin>
-
+            <plugin>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <version>3.1.1</version>
+                <executions>
+                    <execution>
+                        <phase>initialize</phase>
+                        <goals>
+                            <goal>copy-dependencies</goal>
+                        </goals>
+                        <configuration>
+                            <overWriteReleases>false</overWriteReleases>
+                            <includeScope>runtime</includeScope>
+                            <outputDirectory>${project.build.directory}/lib</outputDirectory>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
             <plugin>
                 <groupId>com.spotify</groupId>
                 <artifactId>dockerfile-maven-plugin</artifactId>