通过curl来测试docker对外访问是否正常，这里测试Docker tomcat容器访问：

[root@mysqlserver ~]# curl http://172.17.0.8:8080

<!DOCTYPE html>

<html lang="en">

    <head>

        <meta charset="UTF-8" />

        <title>Apache Tomcat/8.5.16</title>

        <link href="favicon.ico" rel="icon" type="image/x-icon" />

        <link href="favicon.ico" rel="shortcut icon" type="image/x-icon" />

        <link href="tomcat.css" rel="stylesheet" type="text/css" />

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                <span id="nav-hosts"><a href="/docs/">Documentation</a></span>

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                <span id="nav-examples"><a href="/examples/">Examples</a></span>

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            <div id="asf-box">

                <h1>Apache Tomcat/8.5.16</h1>

            </div>

            <div id="upper" class="curved container">

                <div id="congrats" class="curved container">

                    <h2>If you're seeing this, you've successfully installed Tomcat. Congratulations!</h2>

                </div>

                <div id="notice">

                    <img src="tomcat.png" alt="[tomcat logo]" />

                    <div id="tasks">

                        <h3>Recommended Reading:</h3>

                        <h4><a href="/docs/security-howto.html">Security Considerations HOW-TO</a></h4>

                        <h4><a href="/docs/manager-howto.html">Manager Application HOW-TO</a></h4>

                        <h4><a href="/docs/cluster-howto.html">Clustering/Session Replication HOW-TO</a></h4>

                    </div>

                </div>

                <div id="actions">

                    <div class="button">

                        <a class="container shadow" href="/manager/status"><span>Server Status</span></a>

                    </div>

                    <div class="button">

                        <a class="container shadow" href="/manager/html"><span>Manager App</span></a>

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                    <div class="button">

                        <a class="container shadow" href="/host-manager/html"><span>Host Manager</span></a>

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            <div id="middle" class="curved container">

                <h3>Developer Quick Start</h3>

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                        <p><a href="/docs/setup.html">Tomcat Setup</a></p>

                        <p><a href="/docs/appdev/">First Web Application</a></p>

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                    <div class="container">

                        <p><a href="/docs/realm-howto.html">Realms &amp; AAA</a></p>

                        <p><a href="/docs/jndi-datasource-examples-howto.html">JDBC DataSources</a></p>

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                    <div class="container">

                        <p><a href="/examples/">Examples</a></p>

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                        <p><a href="http://wiki.apache.org/tomcat/Specifications">Servlet Specifications</a></p>

                        <p><a href="http://wiki.apache.org/tomcat/TomcatVersions">Tomcat Versions</a></p>

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            <div id="lower">

                <div id="low-manage" class="">

                    <div class="curved container">

                        <h3>Managing Tomcat</h3>

                        <p>For security, access to the <a href="/manager/html">manager webapp</a> is restricted.

                        Users are defined in:</p>

                        <pre>$CATALINA_HOME/conf/tomcat-users.xml</pre>

                        <p>In Tomcat 8.5 access to the manager application is split between

                           different users. &nbsp; <a href="/docs/manager-howto.html">Read more...</a></p>

                        <br />

                        <h4><a href="/docs/RELEASE-NOTES.txt">Release Notes</a></h4>

                        <h4><a href="/docs/changelog.html">Changelog</a></h4>

                        <h4><a href="http://tomcat.apache.org/migration.html">Migration Guide</a></h4>

                        <h4><a href="http://tomcat.apache.org/security.html">Security Notices</a></h4>

                    </div>

                </div>

                <div id="low-docs" class="">

                    <div class="curved container">

                        <h3>Documentation</h3>

                        <h4><a href="/docs/">Tomcat 8.5 Documentation</a></h4>

                        <h4><a href="/docs/config/">Tomcat 8.5 Configuration</a></h4>

                        <h4><a href="http://wiki.apache.org/tomcat/FrontPage">Tomcat Wiki</a></h4>

                        <p>Find additional important configuration information in:</p>

                        <pre>$CATALINA_HOME/RUNNING.txt</pre>

                        <p>Developers may be interested in:</p>

                        <ul>

                            <li><a href="http://tomcat.apache.org/bugreport.html">Tomcat 8.5 Bug Database</a></li>

                            <li><a href="/docs/api/index.html">Tomcat 8.5 JavaDocs</a></li>

                            <li><a href="http://svn.apache.org/repos/asf/tomcat/tc8.5.x/">Tomcat 8.5 SVN Repository</a></li>

                        </ul>

                    </div>

                </div>

                <div id="low-help" class="">

                    <div class="curved container">

                        <h3>Getting Help</h3>

                        <h4><a href="http://tomcat.apache.org/faq/">FAQ</a> and <a href="http://tomcat.apache.org/lists.html">Mailing Lists</a></h4>

                        <p>The following mailing lists are available:</p>

                        <ul>

                            <li id="list-announce"><strong><a href="http://tomcat.apache.org/lists.html#tomcat-announce">tomcat-announce</a><br />

                                Important announcements, releases, security vulnerability notifications. (Low volume).</strong>

                            </li>

                            <li><a href="http://tomcat.apache.org/lists.html#tomcat-users">tomcat-users</a><br />

                                User support and discussion

                            </li>

                            <li><a href="http://tomcat.apache.org/lists.html#taglibs-user">taglibs-user</a><br />

                                User support and discussion for <a href="http://tomcat.apache.org/taglibs/">Apache Taglibs</a>

                            </li>

                            <li><a href="http://tomcat.apache.org/lists.html#tomcat-dev">tomcat-dev</a><br />

                                Development mailing list, including commit messages

                            </li>

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                <div class="col20">

                    <div class="container">

                        <h4>Other Downloads</h4>

                        <ul>

                            <li><a href="http://tomcat.apache.org/download-connectors.cgi">Tomcat Connectors</a></li>

                            <li><a href="http://tomcat.apache.org/download-native.cgi">Tomcat Native</a></li>

                            <li><a href="http://tomcat.apache.org/taglibs/">Taglibs</a></li>

                            <li><a href="/docs/deployer-howto.html">Deployer</a></li>

                        </ul>

                    </div>

                </div>

                <div class="col20">

                    <div class="container">

                        <h4>Other Documentation</h4>

                        <ul>

                            <li><a href="http://tomcat.apache.org/connectors-doc/">Tomcat Connectors</a></li>

                            <li><a href="http://tomcat.apache.org/connectors-doc/">mod_jk Documentation</a></li>

                            <li><a href="http://tomcat.apache.org/native-doc/">Tomcat Native</a></li>

                            <li><a href="/docs/deployer-howto.html">Deployer</a></li>

                        </ul>

                    </div>

                </div>

                <div class="col20">

                    <div class="container">

                        <h4>Get Involved</h4>

                        <ul>

                            <li><a href="http://tomcat.apache.org/getinvolved.html">Overview</a></li>

                            <li><a href="http://tomcat.apache.org/svn.html">SVN Repositories</a></li>

                            <li><a href="http://tomcat.apache.org/lists.html">Mailing Lists</a></li>

                            <li><a href="http://wiki.apache.org/tomcat/FrontPage">Wiki</a></li>

                        </ul>

                    </div>

                </div>

                <div class="col20">

                    <div class="container">

                        <h4>Miscellaneous</h4>

                        <ul>

                            <li><a href="http://tomcat.apache.org/contact.html">Contact</a></li>

                            <li><a href="http://tomcat.apache.org/legal.html">Legal</a></li>

                            <li><a href="http://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li>

                            <li><a href="http://www.apache.org/foundation/thanks.html">Thanks</a></li>

                        </ul>

                    </div>

                </div>

                <div class="col20">

                    <div class="container">

                        <h4>Apache Software Foundation</h4>

                        <ul>

                            <li><a href="http://tomcat.apache.org/whoweare.html">Who We Are</a></li>

                            <li><a href="http://tomcat.apache.org/heritage.html">Heritage</a></li>

                            <li><a href="http://www.apache.org">Apache Home</a></li>

                            <li><a href="http://tomcat.apache.org/resources.html">Resources</a></li>

                        </ul>

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            </div>

            <p class="copyright">Copyright &copy;1999-2017 Apache Software Foundation.  All Rights Reserved</p>

        </div>

    </body>

</html>

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