Changes to incorporate major release of backend-api

- Bumped version to 2.0.0
- Use 2.0.0-SNAPSHOT of backend api dependency, for now
- Switch maven spotify plugin to maven exec plugin

pom.xml

@@ -10,7 +10,7 @@
     </parent>
     <groupId>edu.stanford.protege</groupId>
     <artifactId>webprotege-gwt-api-gateway</artifactId>
-    <version>1.0.13</version>
+    <version>2.0.0</version>
     <name>webprotege-gwt-api-gateway</name>
     <description>The API Gateway for the WebProtégé GWT User Interface</description>
     <properties>
@@ -153,7 +153,7 @@
         <dependency>
             <groupId>edu.stanford.protege</groupId>
             <artifactId>webprotege-backend-api</artifactId>
-            <version>1.0.24-WHO</version>
+            <version>2.0.0-SNAPSHOT</version>
         </dependency>
 
         <dependency>
@@ -190,24 +190,47 @@
                 <artifactId>spring-boot-maven-plugin</artifactId>
             </plugin>
             <plugin>
-                <groupId>com.spotify</groupId>
-                <artifactId>dockerfile-maven-plugin</artifactId>
-                <version>1.4.13</version>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>3.3.0</version>
                 <executions>
                     <execution>
-                        <id>default</id>
+                        <id>docker-build</id>
+                        <phase>package</phase>
                         <goals>
-                            <goal>build</goal>
+                            <goal>exec</goal>
                         </goals>
+                        <configuration>
+                            <executable>docker</executable>
+                            <workingDirectory>${project.basedir}</workingDirectory>
+                            <arguments>
+                                <argument>build</argument>
+                                <argument>-f</argument>
+                                <argument>Dockerfile</argument>
+                                <argument>--build-arg</argument>
+                                <argument>JAR_FILE=${project.artifactId}-${project.version}.jar</argument>
+                                <argument>-t</argument>
+                                <argument>protegeproject/${project.artifactId}:${project.version}</argument>
+                                <argument>.</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>docker-push</id>
+                        <phase>install</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>docker</executable>
+                            <workingDirectory>${project.basedir}</workingDirectory>
+                            <arguments>
+                                <argument>push</argument>
+                                <argument>protegeproject/${project.artifactId}:${project.version}</argument>
+                            </arguments>
+                        </configuration>
                     </execution>
                 </executions>
-                <configuration>
-                    <repository>protegeproject/${project.artifactId}</repository>
-                    <tag>${project.version}</tag>
-                    <buildArgs>
-                        <JAR_FILE>${project.build.finalName}.jar</JAR_FILE>
-                    </buildArgs>
-                </configuration>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>