1. 拉取镜像

docker pull apereo/cas

2. 启动容器

docker run  --name cas -p 8443:8443 -p 8442:8080  apereo/cas /bin/sh /cas-overlay/bin/run-cas.sh

经过漫长的等待，你会发现此时cas会报错，提示没有ssl证书，不要慌继续往下做

     _    ____  _____ ____  _____ ___     ____    _    ____
    / \  |  _ \| ____|  _ \| ____/ _ \   / ___|  / \  / ___|
   / _ \ | |_) |  _| | |_) |  _|| | | | | |     / _ \ \___ \
  / ___ \|  __/| |___|  _ <| |__| |_| | | |___ / ___ \ ___) |
 /_/   \_\_|   |_____|_| \_\_____\___/   \____/_/   \_\____/


CAS Version: 6.3.0-SNAPSHOT
CAS Branch: master
CAS Commit Id: d21b774224b1a9d115cdb0e2ffb936fdec10194a
CAS Build Date/Time: 2020-11-16T17:48:44Z
Spring Boot Version: 2.3.6.RELEASE
Spring Version: 5.2.11.RELEASE
Java Home: /opt/java/openjdk
Java Vendor: AdoptOpenJDK
Java Version: 11.0.9
JVM Free Memory: 146 MB
JVM Maximum Memory: 2 GB
JVM Total Memory: 400 MB
JCE Installed: Yes
OS Architecture: amd64
OS Name: Linux
OS Version: 4.19.128-microsoft-standard
OS Date/Time: 2020-11-20T03:12:54.666232
OS Temp Directory: /tmp
------------------------------------------------------------
Apache Tomcat Version: Apache Tomcat/9.0.39
------------------------------------------------------------


2020-11-20 03:12:54,711 INFO [org.apereo.cas.configuration.DefaultCasConfigurationPropertiesSourceLocator] - <Configuration files found at [/etc/cas/config] are [[file [/etc/cas/config/cas.properties]]] under profile(s) [[standalone]]>
2020-11-20 03:12:54,894 INFO [org.apereo.cas.web.CasWebApplication] - <The following profiles are active: standalone>
2020-11-20 03:12:58,961 INFO [org.apereo.cas.configuration.CasConfigurationPropertiesValidator] - <Validated CAS property sources and configuration successfully.>
2020-11-20 03:13:02,686 WARN [org.hibernate.validator.internal.properties.javabean.JavaBeanExecutable] - <HV000254: Missing parameter metadata for (int, MeterFilter, String, String), which declares implicit or synthetic parameters. Automatic resolution of generic type information for method parameters may yield incorrect results if multiple parameters have the same erasure. To solve this, compile your code with the '-parameters' flag.>
2020-11-20 03:13:06,271 WARN [org.apereo.cas.config.support.authentication.AcceptUsersAuthenticationEventExecutionPlanConfiguration] - <>
2020-11-20 03:13:06,271 WARN [org.apereo.cas.config.support.authentication.AcceptUsersAuthenticationEventExecutionPlanConfiguration] - <


  ____ _____ ___  ____  _
 / ___|_   _/ _ \|  _ \| |
 \___ \ | || | | | |_) | |
  ___) || || |_| |  __/|_|
 |____/ |_| \___/|_|   (_)


CAS is configured to accept a static list of credentials for authentication. While this is generally useful for demo purposes, it is STRONGLY recommended that you DISABLE this authentication method by setting 'cas.authn.accept.enabled=false' and switch to a mode that is more suitable for production.>
2020-11-20 03:13:06,271 WARN [org.apereo.cas.config.support.authentication.AcceptUsersAuthenticationEventExecutionPlanConfiguration] - <>
2020-11-20 03:13:08,104 INFO [org.springframework.boot.autoconfigure.security.servlet.UserDetailsServiceAutoConfiguration] - <

Using generated security password: 126431d0-f2de-4da6-9adb-4061030adc02
>
2020-11-20 03:13:08,288 INFO [org.springframework.security.web.DefaultSecurityFilterChain] - <Will secure Ant [pattern='/login/**'] with []>
2020-11-20 03:13:08,288 INFO [org.springframework.security.web.DefaultSecurityFilterChain] - <Will secure Ant [pattern='/logout/**'] with []>
2020-11-20 03:13:08,288 INFO [org.springframework.security.web.DefaultSecurityFilterChain] - <Will secure Ant [pattern='/validate/**'] with []>
2020-11-20 03:13:08,289 INFO [org.springframework.security.web.DefaultSecurityFilterChain] - <Will secure Ant [pattern='/serviceValidate/**'] with []>
2020-11-20 03:13:08,289 INFO [org.springframework.security.web.DefaultSecurityFilterChain] - <Will secure Ant [pattern='/p3/serviceValidate/**'] with []>
2020-11-20 03:13:08,289 INFO [org.springframework.security.web.DefaultSecurityFilterChain] - <Will secure Ant [pattern='/proxyValidate/**'] with []>
2020-11-20 03:13:08,289 INFO [org.springframework.security.web.DefaultSecurityFilterChain] - <Will secure Ant [pattern='/p3/proxyValidate/**'] with []>
2020-11-20 03:13:08,289 INFO [org.springframework.security.web.DefaultSecurityFilterChain] - <Will secure Ant [pattern='/proxy/**'] with []>
2020-11-20 03:13:08,385 INFO [org.springframework.security.web.access.channel.ChannelProcessingFilter] - <Validated configuration attributes>
2020-11-20 03:13:08,412 INFO [org.springframework.security.web.DefaultSecurityFilterChain] - <Will secure any request with [org.springframework.security.web.access.channel.ChannelProcessingFilter@283e1759, org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter@459d2ee6, org.springframework.security.web.context.SecurityContextPersistenceFilter@338a4c61, org.springframework.security.web.savedrequest.RequestCacheAwareFilter@6d31f14, org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter@65ef9a0a, org.springframework.security.web.authentication.AnonymousAuthenticationFilter@5342eec5, org.springframework.security.web.session.SessionManagementFilter@164dea80, org.springframework.security.web.access.ExceptionTranslationFilter@10d4b573, org.springframework.security.web.access.intercept.FilterSecurityInterceptor@1a819901]>
2020-11-20 03:13:08,900 WARN [org.apereo.cas.web.CasWebApplicationContext] - <Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Failed to start bean 'webServerStartStop'; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat server>
Exception in thread "main" java.lang.reflect.InvocationTargetException
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.base/java.lang.reflect.Method.invoke(Unknown Source)
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:107)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
        at org.springframework.boot.loader.WarLauncher.main(WarLauncher.java:59)
Caused by: org.springframework.context.ApplicationContextException: Failed to start bean 'webServerStartStop'; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat server
        at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:185)
        at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:53)
        at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:360)
        at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:158)
        at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:122)
        at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:895)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554)
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
        at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:140)
        at org.apereo.cas.web.CasWebApplication.main(CasWebApplication.java:84)
        ... 8 more
Caused by: org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat server
        at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:229)
        at org.springframework.boot.web.servlet.context.WebServerStartStopLifecycle.start(WebServerStartStopLifecycle.java:43)
        at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:182)
        ... 21 more
Caused by: java.lang.IllegalArgumentException: standardService.connector.startFailed
        at org.apache.catalina.core.StandardService.addConnector(StandardService.java:231)
        at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.addPreviouslyRemovedConnectors(TomcatWebServer.java:282)
        at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:213)
        ... 23 more
Caused by: org.apache.catalina.LifecycleException: Protocol handler start failed
        at org.apache.catalina.connector.Connector.startInternal(Connector.java:1067)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        at org.apache.catalina.core.StandardService.addConnector(StandardService.java:227)
        ... 25 more
Caused by: java.lang.IllegalArgumentException: /etc/cas/thekeystore (No such file or directory)
        at org.apache.tomcat.util.net.AbstractJsseEndpoint.createSSLContext(AbstractJsseEndpoint.java:99)
        at org.apache.tomcat.util.net.AbstractJsseEndpoint.initialiseSsl(AbstractJsseEndpoint.java:71)
        at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:216)
        at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1141)
        at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:1227)
        at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:592)
        at org.apache.catalina.connector.Connector.startInternal(Connector.java:1064)
        ... 27 more
Caused by: java.io.FileNotFoundException: /etc/cas/thekeystore (No such file or directory)
        at java.base/java.io.FileInputStream.open0(Native Method)
        at java.base/java.io.FileInputStream.open(Unknown Source)
        at java.base/java.io.FileInputStream.<init>(Unknown Source)
        at java.base/java.io.FileInputStream.<init>(Unknown Source)
        at java.base/sun.net.www.protocol.file.FileURLConnection.connect(Unknown Source)
        at java.base/sun.net.www.protocol.file.FileURLConnection.getInputStream(Unknown Source)
        at org.apache.catalina.startup.CatalinaBaseConfigurationSource.getResource(CatalinaBaseConfigurationSource.java:121)
        at org.apache.tomcat.util.net.SSLUtilBase.getStore(SSLUtilBase.java:197)
        at org.apache.tomcat.util.net.SSLHostConfigCertificate.getCertificateKeystore(SSLHostConfigCertificate.java:207)
        at org.apache.tomcat.util.net.SSLUtilBase.getKeyManagers(SSLUtilBase.java:282)
        at org.apache.tomcat.util.net.SSLUtilBase.createSSLContext(SSLUtilBase.java:246)
        at org.apache.tomcat.util.net.AbstractJsseEndpoint.createSSLContext(AbstractJsseEndpoint.java:97)
        ... 33 more

3. 生成ssl证书

sudo keytool -genkeypair -alias cas -keyalg RSA -keypass changeit -storepass changeit -keystore server.keystore -dname "CN=cas,OU=cas,OU=cas,C=cas"  -ext SAN="dns:localhost,ip:127.0.0.1"

4. 将ssl证书复制到容器内

docker cp server.keystore cas:/etc/cas/thekeystore

5. 配置完毕，重启容器

docker restart cas

6. 大功告成
   访问地址：https://127.0.0.1:8443/cas/login
   初始用户名：casuser
   初始密码：Mellon