Update BrowserWebDriverContainer to honor existing no_proxy setting

modules/selenium/src/main/java/org/testcontainers/containers/BrowserWebDriverContainer.java

@@ -131,7 +131,11 @@ protected void configure() {
 
         addExposedPorts(SELENIUM_PORT, VNC_PORT);
         addEnv("TZ", timeZone);
-        addEnv("no_proxy", "localhost");
+
+        if (!getEnvMap().containsKey("no_proxy")) {
+            addEnv("no_proxy", "localhost");
+        }
+
         setCommand("/opt/bin/entry_point.sh");
 
         /*

modules/selenium/src/test/java/org/testcontainers/junit/BrowserWebDriverContainerTest.java

@@ -0,0 +1,34 @@
+package org.testcontainers.junit;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.openqa.selenium.remote.DesiredCapabilities;
+import org.testcontainers.containers.BrowserWebDriverContainer;
+
+import static org.rnorth.visibleassertions.VisibleAssertions.assertEquals;
+
+public class BrowserWebDriverContainerTest {
+
+    private static final String NO_PROXY_VALUE = "localhost,.noproxy-domain.com";
+
+    @Rule
+    public BrowserWebDriverContainer chromeWithNoProxySet = (BrowserWebDriverContainer) new BrowserWebDriverContainer()
+        .withDesiredCapabilities(DesiredCapabilities.chrome())
+        .withEnv("no_proxy", NO_PROXY_VALUE);
+
+    @Rule
+    public BrowserWebDriverContainer chromeWithoutNoProxySet = new BrowserWebDriverContainer()
+        .withDesiredCapabilities(DesiredCapabilities.chrome());
+
+    @Test
+    public void honorPresetNoProxyEnvironment() {
+        Object no_proxy = chromeWithNoProxySet.getEnvMap().get("no_proxy");
+        assertEquals("no_proxy should be preserved by the container rule", NO_PROXY_VALUE, no_proxy);
+    }
+
+    @Test
+    public void provideDefaultNoProxyEnvironmentIfNotSet() {
+        Object no_proxy = chromeWithoutNoProxySet.getEnvMap().get("no_proxy");
+        assertEquals("no_proxy should be set to default if not already present", "localhost", no_proxy);
+    }
+}