fix: integration-tests WebDriverException + add logging

* use own docker network
* log warnings from selenium/tomcat container
* some improvements (wait for container, getTomcatUrl(), container aliases, logback-test.xml)
diff --git a/tobago-example/tobago-example-demo/src/test/java/org/apache/myfaces/tobago/example/demo/integration/BasicTest.java b/tobago-example/tobago-example-demo/src/test/java/org/apache/myfaces/tobago/example/demo/integration/BasicTest.java
index 19ae800..7c0999f 100644
--- a/tobago-example/tobago-example-demo/src/test/java/org/apache/myfaces/tobago/example/demo/integration/BasicTest.java
+++ b/tobago-example/tobago-example-demo/src/test/java/org/apache/myfaces/tobago/example/demo/integration/BasicTest.java
@@ -62,18 +62,15 @@
 
   @Test
   void verifyExceptionTest() throws MalformedURLException, UnknownHostException, UnsupportedEncodingException {
-    final String host = InetAddress.getLocalHost().getHostAddress();
-    final int tomcatPort = getTomcatPort();
     final String path = "error/exception.xhtml";
 
     final String base = path.substring(0, path.length() - 6);
-    final String url = "http://" + host + ":" + tomcatPort + "/test.xhtml?base="
-        + URLEncoder.encode(base, "UTF-8") + "&basicTest=true";
+    final String testUrl = getTomcatUrl() + "/test.xhtml?base=" + URLEncoder.encode(base, "UTF-8") + "&basicTest=true";
 
-    WebDriver webDriver = getWebDriver(host, getFirefoxPort());
-    webDriver.get(url);
+    WebDriver webDriver = getWebDriver();
+    webDriver.get(testUrl);
 
-    List<WebElement> results = getJasmineResults(webDriver, url);
+    List<WebElement> results = getJasmineResults(webDriver, testUrl);
     Assertions.assertTrue(results.size() > 0, "no results detected");
     for (WebElement result : results) {
       if ("has no exception".equals(result.getAttribute("title"))) {
@@ -86,18 +83,15 @@
 
   @Test
   void verify404Test() throws MalformedURLException, UnknownHostException, UnsupportedEncodingException {
-    final String host = InetAddress.getLocalHost().getHostAddress();
-    final int tomcatPort = getTomcatPort();
     final String path = "error/404.xhtml";
 
     final String base = path.substring(0, path.length() - 6);
-    final String url = "http://" + host + ":" + tomcatPort + "/test.xhtml?base="
-        + URLEncoder.encode(base, "UTF-8") + "&basicTest=true";
+    final String testUrl = getTomcatUrl() + "/test.xhtml?base=" + URLEncoder.encode(base, "UTF-8") + "&basicTest=true";
 
-    WebDriver webDriver = getWebDriver(host, getFirefoxPort());
-    webDriver.get(url);
+    WebDriver webDriver = getWebDriver();
+    webDriver.get(testUrl);
 
-    List<WebElement> results = getJasmineResults(webDriver, url);
+    List<WebElement> results = getJasmineResults(webDriver, testUrl);
     Assertions.assertTrue(results.size() > 0, "no results detected");
     for (WebElement result : results) {
       if ("has no 404".equals(result.getAttribute("title"))) {
@@ -117,17 +111,14 @@
       throws MalformedURLException, UnknownHostException, UnsupportedEncodingException {
 
     final String timeLeft = getTimeLeft(startTime, testSize, testNumber);
-    final String host = InetAddress.getLocalHost().getHostAddress();
-    final int tomcatPort = getTomcatPort();
-    final String pageUrl = "http://" + host + ":" + tomcatPort + "/" + path;
+    final String pageUrl = getTomcatUrl() + "/" + path;
 
     LOG.info("(" + testNumber + "/" + testSize + " | time left: " + timeLeft + ") - url: " + pageUrl);
 
     final String base = path.substring(0, path.length() - 6);
-    final String testUrl = "http://" + host + ":" + tomcatPort + "/test.xhtml?base="
-        + URLEncoder.encode(base, "UTF-8") + "&basicTest=true";
+    final String testUrl = getTomcatUrl() + "/test.xhtml?base=" + URLEncoder.encode(base, "UTF-8") + "&basicTest=true";
 
-    WebDriver webDriver = getWebDriver(host, getFirefoxPort());
+    WebDriver webDriver = getWebDriver();
     webDriver.get(testUrl);
 
     List<WebElement> results = getJasmineResults(webDriver, pageUrl);
diff --git a/tobago-example/tobago-example-demo/src/test/java/org/apache/myfaces/tobago/example/demo/integration/FrontendBase.java b/tobago-example/tobago-example-demo/src/test/java/org/apache/myfaces/tobago/example/demo/integration/FrontendBase.java
index 999bdd9..f9d6744 100644
--- a/tobago-example/tobago-example-demo/src/test/java/org/apache/myfaces/tobago/example/demo/integration/FrontendBase.java
+++ b/tobago-example/tobago-example-demo/src/test/java/org/apache/myfaces/tobago/example/demo/integration/FrontendBase.java
@@ -33,13 +33,18 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.testcontainers.containers.GenericContainer;
+import org.testcontainers.containers.Network;
+import org.testcontainers.containers.output.Slf4jLogConsumer;
+import org.testcontainers.containers.wait.strategy.Wait;
 import org.testcontainers.junit.jupiter.Container;
 import org.testcontainers.utility.DockerImageName;
 
 import java.io.IOException;
 import java.lang.invoke.MethodHandles;
+import java.net.InetAddress;
 import java.net.MalformedURLException;
 import java.net.URL;
+import java.net.UnknownHostException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -52,17 +57,25 @@
 
   private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
 
-  @SuppressWarnings("rawtypes") // this is how to use testcontainers
-  @Container
-  private static final GenericContainer SELENIUM_FIREFOX =
-      new GenericContainer<>(DockerImageName.parse("henningn/selenium-standalone-firefox"))
-          .withExposedPorts(4444);
+  private static final Network NETWORK = Network.newNetwork();
+  private static final String SELENIUM_ALIAS = "selenium";
+  private static final String TOMCAT_ALIAS = "tomcat";
+  public static final int SELENIUM_PORT = 4444;
+  public static final int TOMCAT_PORT = 8080;
 
-  @SuppressWarnings("rawtypes") // this is how to use testcontainers
   @Container
-  private static final GenericContainer TOMCAT =
-      new GenericContainer(DockerImageName.parse("myfaces/tobago-example-demo"))
-          .withExposedPorts(8080);
+  private static final GenericContainer<?> SELENIUM_FIREFOX =
+      new GenericContainer<>(DockerImageName.parse("henningn/selenium-standalone-firefox"))
+          .withNetwork(NETWORK).withNetworkAliases(SELENIUM_ALIAS).withExposedPorts(SELENIUM_PORT)
+          .waitingFor(Wait.forHttp("/").forPort(SELENIUM_PORT))
+          .withLogConsumer(new Slf4jLogConsumer(LoggerFactory.getLogger(SELENIUM_ALIAS)).withSeparateOutputStreams());
+
+  @Container
+  private static final GenericContainer<?> TOMCAT =
+      new GenericContainer<>(DockerImageName.parse("myfaces/tobago-example-demo"))
+          .withNetwork(NETWORK).withNetworkAliases(TOMCAT_ALIAS).withExposedPorts(TOMCAT_PORT)
+          .waitingFor(Wait.forHttp("/").forPort(TOMCAT_PORT))
+          .withLogConsumer(new Slf4jLogConsumer(LoggerFactory.getLogger(TOMCAT_ALIAS)).withSeparateOutputStreams());
 
   private static WebDriver firefoxDriver;
 
@@ -84,8 +97,10 @@
         .collect(Collectors.toList());
   }
 
-  WebDriver getWebDriver(final String host, final Integer port) throws MalformedURLException {
+  WebDriver getWebDriver() throws MalformedURLException, UnknownHostException {
     if (firefoxDriver == null || ((RemoteWebDriver) firefoxDriver).getSessionId() == null) {
+      final String host = InetAddress.getLocalHost().getHostAddress();
+      final int port = SELENIUM_FIREFOX.getFirstMappedPort();
       firefoxDriver = new RemoteWebDriver(new URL("http://" + host + ":" + port + "/wd/hub"), new FirefoxOptions());
     }
     return firefoxDriver;
@@ -146,11 +161,7 @@
     }
   }
 
-  int getFirefoxPort() {
-    return SELENIUM_FIREFOX.getFirstMappedPort();
-  }
-
-  int getTomcatPort() {
-    return TOMCAT.getFirstMappedPort();
+  String getTomcatUrl() {
+    return "http://" + TOMCAT_ALIAS + ":" + TOMCAT_PORT;
   }
 }
diff --git a/tobago-example/tobago-example-demo/src/test/java/org/apache/myfaces/tobago/example/demo/integration/FrontendTest.java b/tobago-example/tobago-example-demo/src/test/java/org/apache/myfaces/tobago/example/demo/integration/FrontendTest.java
index e314b32..37a41cb 100644
--- a/tobago-example/tobago-example-demo/src/test/java/org/apache/myfaces/tobago/example/demo/integration/FrontendTest.java
+++ b/tobago-example/tobago-example-demo/src/test/java/org/apache/myfaces/tobago/example/demo/integration/FrontendTest.java
@@ -32,7 +32,6 @@
 import java.io.IOException;
 import java.io.UnsupportedEncodingException;
 import java.lang.invoke.MethodHandles;
-import java.net.InetAddress;
 import java.net.MalformedURLException;
 import java.net.URLEncoder;
 import java.net.UnknownHostException;
@@ -62,16 +61,14 @@
       throws MalformedURLException, UnknownHostException, UnsupportedEncodingException {
 
     final String timeLeft = getTimeLeft(FrontendTest.startTime, testSize, testNumber);
-    final String host = InetAddress.getLocalHost().getHostAddress();
-    final int tomcatPort = getTomcatPort();
-    final String pageUrl = "http://" + host + ":" + tomcatPort + "/" + path;
+    final String pageUrl = getTomcatUrl() + "/" + path;
 
     LOG.info("(" + testNumber + "/" + testSize + " | time left: " + timeLeft + ") - url: " + pageUrl);
 
     final String base = path.substring(0, path.length() - 6);
-    final String testUrl = "http://" + host + ":" + tomcatPort + "/test.xhtml?base=" + URLEncoder.encode(base, "UTF-8");
+    final String testUrl = getTomcatUrl() + "/test.xhtml?base=" + URLEncoder.encode(base, "UTF-8");
 
-    WebDriver webDriver = getWebDriver(host, getFirefoxPort());
+    WebDriver webDriver = getWebDriver();
     webDriver.get(testUrl);
 
     List<WebElement> results = getJasmineResults(webDriver, pageUrl);
diff --git a/tobago-example/tobago-example-demo/src/test/java/org/junit/rules/ExternalResource.java b/tobago-example/tobago-example-demo/src/test/java/org/junit/rules/ExternalResource.java
new file mode 100644
index 0000000..810e944
--- /dev/null
+++ b/tobago-example/tobago-example-demo/src/test/java/org/junit/rules/ExternalResource.java
@@ -0,0 +1,27 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.junit.rules;
+
+/*
+ * the fake class is needed for testcontainers, because of an dependency to junit4
+ * https://github.com/testcontainers/testcontainers-java/issues/970
+ */
+public abstract class ExternalResource implements TestRule {
+}
diff --git a/tobago-example/tobago-example-demo/src/test/resources/logback-test.xml b/tobago-example/tobago-example-demo/src/test/resources/logback-test.xml
new file mode 100644
index 0000000..1b09d19
--- /dev/null
+++ b/tobago-example/tobago-example-demo/src/test/resources/logback-test.xml
@@ -0,0 +1,35 @@
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one
+  ~ or more contributor license agreements.  See the NOTICE file
+  ~ distributed with this work for additional information
+  ~ regarding copyright ownership.  The ASF licenses this file
+  ~ to you under the Apache License, Version 2.0 (the
+  ~ "License"); you may not use this file except in compliance
+  ~ with the License.  You may obtain a copy of the License at
+  ~
+  ~   http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing,
+  ~ software distributed under the License is distributed on an
+  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  ~ KIND, either express or implied.  See the License for the
+  ~ specific language governing permissions and limitations
+  ~ under the License.
+  -->
+
+<configuration>
+  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder>
+      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
+    </encoder>
+  </appender>
+
+  <root level="info">
+    <appender-ref ref="STDOUT"/>
+  </root>
+
+  <logger name="org.testcontainers" level="INFO"/>
+  <logger name="com.github.dockerjava" level="WARN"/>
+  <logger name="tomcat" level="WARN"/>
+  <logger name="selenium" level="WARN"/>
+</configuration>