Update below statement
FluentWait wait = new WebDriverWait(driver, 2).pollingEvery(100, TimeUnit.MILLISECONDS);
to
FluentWait wait = new WebDriverWait(driver, 2).pollingEvery(Duration.ofMillis(100));

Affected class: AbstractEmbeddedTomcatSeleniumTest.java
Affected methods: login, employeeLogin

[RemoteTestNG] detected TestNG version 6.9.10
org.testng.TestNGException:
Cannot instantiate class com.joshcummings.codeplay.terracotta.MakeDepositFunctionalTest
at org.testng.internal.ObjectFactoryImpl.newInstance(ObjectFactoryImpl.java:40)
at org.testng.internal.ClassHelper.createInstance1(ClassHelper.java:377)
at org.testng.internal.ClassHelper.createInstance(ClassHelper.java:290)
at org.testng.internal.ClassImpl.getDefaultInstance(ClassImpl.java:125)
at org.testng.internal.ClassImpl.getInstances(ClassImpl.java:190)
at org.testng.internal.TestNGClassFinder.(TestNGClassFinder.java:130)
at org.testng.TestRunner.initMethods(TestRunner.java:424)
at org.testng.TestRunner.init(TestRunner.java:247)
at org.testng.TestRunner.init(TestRunner.java:217)
at org.testng.TestRunner.(TestRunner.java:169)
at org.testng.remote.support.RemoteTestNG6_9_10$1.newTestRunner(RemoteTestNG6_9_10.java:29)
at org.testng.remote.support.RemoteTestNG6_9_10$DelegatingTestRunnerFactory.newTestRunner(RemoteTestNG6_9_10.java:65)
at org.testng.SuiteRunner$ProxyTestRunnerFactory.newTestRunner(SuiteRunner.java:594)
at org.testng.SuiteRunner.init(SuiteRunner.java:168)
at org.testng.SuiteRunner.(SuiteRunner.java:117)
at org.testng.TestNG.createSuiteRunner(TestNG.java:1319)
at org.testng.TestNG.createSuiteRunners(TestNG.java:1306)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1160)
at org.testng.TestNG.run(TestNG.java:1064)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.testng.internal.ObjectFactoryImpl.newInstance(ObjectFactoryImpl.java:29)
... 21 more
Caused by: java.lang.NullPointerException: uri was not specified
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:787)
at com.github.dockerjava.core.DefaultDockerClientConfig$Builder.withDockerHost(DefaultDockerClientConfig.java:348)
at com.joshcummings.codeplay.terracotta.testng.DockerSupport.(DockerSupport.java:14)
at com.joshcummings.codeplay.terracotta.AbstractEmbeddedTomcatSeleniumTest.(AbstractEmbeddedTomcatSeleniumTest.java:32)
at com.joshcummings.codeplay.terracotta.MakeDepositFunctionalTest.(MakeDepositFunctionalTest.java:30)
... 26 more

Not sure if I am missing anything here, but I did exaclty as per your video on pluralsight when I attemted to run tests using testng on eclipse and I see the below which says uri was not specified. I also pasted the mainer.java console lob that I copied soon after I ran the test.

TransferMoneyFunctionalTest.java

[RemoteTestNG] detected TestNG version 6.9.10
org.testng.TestNGException:
Cannot instantiate class com.joshcummings.codeplay.terracotta.TransferMoneyFunctionalTest
at org.testng.internal.ObjectFactoryImpl.newInstance(ObjectFactoryImpl.java:40)
at org.testng.internal.ClassHelper.createInstance1(ClassHelper.java:377)
at org.testng.internal.ClassHelper.createInstance(ClassHelper.java:290)
at org.testng.internal.ClassImpl.getDefaultInstance(ClassImpl.java:125)
at org.testng.internal.ClassImpl.getInstances(ClassImpl.java:190)
at org.testng.internal.TestNGClassFinder.(TestNGClassFinder.java:130)
at org.testng.TestRunner.initMethods(TestRunner.java:424)
at org.testng.TestRunner.init(TestRunner.java:247)
at org.testng.TestRunner.init(TestRunner.java:217)
at org.testng.TestRunner.(TestRunner.java:169)
at org.testng.remote.support.RemoteTestNG6_9_10$1.newTestRunner(RemoteTestNG6_9_10.java:29)
at org.testng.remote.support.RemoteTestNG6_9_10$DelegatingTestRunnerFactory.newTestRunner(RemoteTestNG6_9_10.java:65)
at org.testng.SuiteRunner$ProxyTestRunnerFactory.newTestRunner(SuiteRunner.java:594)
at org.testng.SuiteRunner.init(SuiteRunner.java:168)
at org.testng.SuiteRunner.(SuiteRunner.java:117)
at org.testng.TestNG.createSuiteRunner(TestNG.java:1319)
at org.testng.TestNG.createSuiteRunners(TestNG.java:1306)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1160)
at org.testng.TestNG.run(TestNG.java:1064)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.testng.internal.ObjectFactoryImpl.newInstance(ObjectFactoryImpl.java:29)
... 21 more
Caused by: java.lang.NullPointerException: uri was not specified
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:787)
at com.github.dockerjava.core.DefaultDockerClientConfig$Builder.withDockerHost(DefaultDockerClientConfig.java:348)
at com.joshcummings.codeplay.terracotta.testng.DockerSupport.(DockerSupport.java:14)
at com.joshcummings.codeplay.terracotta.AbstractEmbeddedTomcatSeleniumTest.(AbstractEmbeddedTomcatSeleniumTest.java:31)
at com.joshcummings.codeplay.terracotta.TransferMoneyFunctionalTest.(TransferMoneyFunctionalTest.java:22)
... 26 more

Mainer.java

Mar 27, 2018 7:49:40 AM org.apache.catalina.core.StandardContext setPath
WARNING: A context path must either be an empty string or start with a '/' and do not end with a '/'. The path [/] does not meet these criteria and has been changed to []
configuring app with basedir: /Users/reddyvari/code/xss/terracotta-bank/./src/main/webapp
Mar 27, 2018 7:49:41 AM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-nio-8080"]
Mar 27, 2018 7:49:41 AM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector
INFO: Using a shared selector for servlet write/read
Mar 27, 2018 7:49:41 AM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Tomcat
Mar 27, 2018 7:49:41 AM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/8.0.28
Mar 27, 2018 7:49:41 AM org.apache.catalina.startup.ContextConfig getDefaultWebXmlFragment
INFO: No global web.xml found
Mar 27, 2018 7:50:02 AM org.apache.catalina.core.ContainerBase startInternal
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost].StandardContext[]]
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost].StandardContext[]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
... 6 more
Caused by: java.lang.IllegalArgumentException: Filter mapping specifies an unknown filter name characterEncodingFilter
at org.apache.catalina.core.StandardContext.validateFilterMap(StandardContext.java:2878)
at org.apache.catalina.core.StandardContext.addFilterMap(StandardContext.java:2843)
at org.apache.catalina.startup.ContextConfig.configureContext(ContextConfig.java:1271)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1176)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:771)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:305)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5080)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 6 more

Mar 27, 2018 7:50:02 AM org.apache.catalina.core.ContainerBase startInternal
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost]]
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:439)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:769)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:337)
at com.joshcummings.codeplay.terracotta.TomcatBootstrapper.startTomcat(TomcatBootstrapper.java:34)
at com.joshcummings.codeplay.terracotta.Mainer.main(Mainer.java:10)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:924)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:871)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 6 more

Exception in thread "main" org.apache.catalina.LifecycleException: Failed to start component [StandardServer[-1]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:337)
at com.joshcummings.codeplay.terracotta.TomcatBootstrapper.startTomcat(TomcatBootstrapper.java:34)
at com.joshcummings.codeplay.terracotta.Mainer.main(Mainer.java:10)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Tomcat]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:769)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 3 more
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:439)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 5 more
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:924)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 7 more

This fails to run out of the box or is this intentional?

SEVERE: Servlet.service() for servlet [jsp] in context with path [] threw exception [The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application] with root cause
org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application
at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:55)
at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:277)
at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:75)
at org.apache.jasper.compiler.TagLibraryInfoImpl.generateTldResourcePath(TagLibraryInfoImpl.java:243)
at org.apache.jasper.compiler.TagLibraryInfoImpl.(TagLibraryInfoImpl.java:124)
at org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:416)
at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:474)
at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1430)
at org.apache.jasper.compiler.Parser.parse(Parser.java:139)
at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:227)
at org.apache.jasper.compiler.ParserController.parse(ParserController.java:100)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:356)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:336)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:323)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:585)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:363)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.joshcummings.codeplay.terracotta.defense.http.TokenBasedCsrfDetectionFilter.doFilter(TokenBasedCsrfDetectionFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.joshcummings.codeplay.terracotta.app.UserFilter.doFilter(UserFilter.java:39)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.joshcummings.codeplay.terracotta.metrics.RequestClassificationFilter.doFilter(RequestClassificationFilter.java:27)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:217)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:834)