Add test for equals contract of ContainerStatus

pom.xml

@@ -140,6 +140,12 @@
             <version>1.0.5</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>nl.jqno.equalsverifier</groupId>
+            <artifactId>equalsverifier</artifactId>
+            <version>3.16.1</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <!-- org.testcontainers:testcontainers uses org.slf4j:slf4j-api for logging.
             To get the complete log during tests we redirect slf4j to JUL with this dependency. -->

src/test/java/com/exasol/containers/status/ContainerStatusTest.java

@@ -14,8 +14,16 @@
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.CsvSource;
 
+import nl.jqno.equalsverifier.EqualsVerifier;
+
 @Tag("fast")
 class ContainerStatusTest {
+
+    @Test
+    void testEqualsContract() {
+        EqualsVerifier.forClass(ContainerStatus.class).verify();
+    }
+
     @Test
     void testGetContainerId() throws Exception {
         final String containerId = "the_id";
@@ -49,4 +57,4 @@ void testAddAllAppliedWorkarounds() {
         status.addAllAppliedWorkarounds(Set.of("A", "B"));
         assertThat(status.getAppliedWorkarounds(), containsInAnyOrder("A", "B"));
     }
-}
+}