Explanation:
Let's build a custom image of a java web application which runs on Tomcat8
Create a directory named "HelloWorld" under opt to download HelloWorld.war
ubuntu@ip-172-31-59-138:~$ sudo mkdir /opt/HelloWorld
ubuntu@ip-172-31-59-138:~$ cd /opt/HelloWorld
ubuntu@ip-172-31-59-138:/opt/HelloWorld$ sudo wget https://storage.googleapis.com/skl-training/aws-codelabs/aws-intro/HelloWorld.war
--2019-08-24 13:52:00-- https://storage.googleapis.com/skl-training/aws-codelabs/aws-intro/HelloWorld.war
Resolving storage.googleapis.com (storage.googleapis.com)... 172.217.15.112, 2607:f8b0:4004:814::2010
Connecting to storage.googleapis.com (storage.googleapis.com)|172.217.15.112|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 9852807 (9.4M) [application/octet-stream]
Saving to: ‘HelloWorld.war’
HelloWorld.war 100%[===================>] 9.40M --.-KB/s in 0.1s
2019-08-24 13:52:00 (91.5 MB/s) - ‘HelloWorld.war’ saved [9852807/9852807]
Note: HelloWorld.war can be downloaded from https://storage.googleapis.com/skl-training/aws-codelabs/aws-intro/HelloWorld.war
Create a dockerfile in /opt/HelloWorld to build the image. (What is a dockerfile?)
#******************************************************************************
#Author - J. Xavier Dilip Kumar
#This is the dockerfile o create HelloWorld image
#******************************************************************************
# The FROM instruction sets the Base Image for subsequent instructions.
# As such, a valid Dockerfile must have FROM as its first instruction.
#
# FROM <image>[:<tag>|@<digest]
FROM tomcat:jre8
# The MAINTAINER instruction allows you to set the Author field of the
# generated images.
#
# MAINTAINER <name>
MAINTAINER XDK
# The LABEL instruction adds metadata to an image. A LABEL is a key-value
# pair. To include spaces within a LABEL value, use quotes and blackslashes
# as you would in command-line parsing.
#
# LABEL <key>=<value> <key>=<value> <key>=<value> ...
LABEL com.company.key="XDK_Company"
# The COPY instruction copies new files or directories from <src> and adds
# them to the filesystem of the container at the path <dest>.
#
# COPY <src>... <dest>
# COPY ["<src>"... "<dest>"] (this form is required for paths containing
# whitespace)
COPY HelloWorld.war /usr/local/tomcat/webapps/
#******************************************************************************
Command to build the custom image
ubuntu@ip-172-31-59-138:/opt/HelloWorld$ docker build -t xdk_helloworld .
Sending build context to Docker daemon 9.857MB
Step 1/4 : FROM tomcat:jre8
jre8: Pulling from library/tomcat
c5e155d5a1d1: Pull complete
221d80d00ae9: Pull complete
4250b3117dca: Pull complete
d1370422ab93: Pull complete
deb6b03222ca: Pull complete
9cdea8d70cc3: Pull complete
968505be14db: Pull complete
04b5c270ac81: Pull complete
301d76fcab1f: Pull complete
57ca7a0b9e79: Pull complete
3c1d6826d7a3: Pull complete
Digest: sha256:7cdf9dca1472da80e7384403c57b0632753a3a5cdf4f310fc39462e08af8ef39
Status: Downloaded newer image for tomcat:jre8
---> 3639174793ba
Step 2/4 : MAINTAINER XDK
---> Running in de32f3a0cc74
Removing intermediate container de32f3a0cc74
---> d9afcbf0e67e
Step 3/4 : LABEL com.company.key="XDK_Company"
---> Running in f709a079d952
Removing intermediate container f709a079d952
---> 843040213d62
Step 4/4 : COPY HelloWorld.war /usr/local/tomcat/webapps/
---> df98878e7bdf
Successfully built df98878e7bdf
Successfully tagged xdk_helloworld:latest
Verify the image.
ubuntu@ip-172-31-59-138:/opt/HelloWorld$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
xdk_helloworld latest a801afaa1782 20 seconds ago 473MB
tomcat jre8 3639174793ba 3 months ago 463MB
Command to run the xdk_helloworld docker image, to listen to the port 80 and route to 8080 in the container which is the tomcat's default port 8080 at runtime.
ubuntu@ip-172-31-59-138:/opt/HelloWorld$ docker run -p 80:8080 xdk_helloworld
24-Aug-2019 14:34:03.460 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server ersion: Apache Tomcat/8.5.41
24-Aug-2019 14:34:03.464 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server uilt: May 4 2019 09:17:16 UTC
24-Aug-2019 14:34:03.465 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server umber: 8.5.41.0
24-Aug-2019 14:34:03.465 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name Linux
24-Aug-2019 14:34:03.465 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Verson: 4.15.0-1044-aws
24-Aug-2019 14:34:03.466 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architeture: amd64
24-Aug-2019 14:34:03.467 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Hoe: /usr/lib/jvm/java-8-openjdk-amd64/jre
24-Aug-2019 14:34:03.467 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Verion: 1.8.0_212-8u212-b01-1~deb9u1-b01
24-Aug-2019 14:34:03.468 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Venor: Oracle Corporation
24-Aug-2019 14:34:03.479 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALIN_BASE: /usr/local/tomcat
24-Aug-2019 14:34:03.480 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALIN_HOME: /usr/local/tomcat
24-Aug-2019 14:34:03.480 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Commandline argument: -Djava.util.logging.config.file=/usr/local/tomcat/conf/logging.properties
24-Aug-2019 14:34:03.481 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Commandline argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
24-Aug-2019 14:34:03.481 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Commandline argument: -Djdk.tls.ephemeralDHKeySize=2048
24-Aug-2019 14:34:03.482 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Commandline argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
24-Aug-2019 14:34:03.482 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Commandline argument: -Dorg.apache.catalina.security.SecurityListener.UMASK=0027
24-Aug-2019 14:34:03.483 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Commandline argument: -Dignore.endorsed.dirs=
24-Aug-2019 14:34:03.483 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Commandline argument: -Dcatalina.base=/usr/local/tomcat
24-Aug-2019 14:34:03.484 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Commandline argument: -Dcatalina.home=/usr/local/tomcat
24-Aug-2019 14:34:03.485 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Commandline argument: -Djava.io.tmpdir=/usr/local/tomcat/temp
24-Aug-2019 14:34:03.485 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent oaded APR based Apache Tomcat Native library [1.2.21] using APR version [1.5.2].
24-Aug-2019 14:34:03.486 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent PR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].
24-Aug-2019 14:34:03.486 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent PR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true]
24-Aug-2019 14:34:03.511 INFO [main] org.apache.catalina.core.AprLifecycleListener.initializeSSL OenSSL successfully initialized [OpenSSL 1.1.0j 20 Nov 2018]
24-Aug-2019 14:34:03.747 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing Protocolandler ["http-nio-8080"]
24-Aug-2019 14:34:03.781 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector sing a shared selector for servlet write/read
24-Aug-2019 14:34:03.813 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing Protocolandler ["ajp-nio-8009"]
24-Aug-2019 14:34:03.814 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector sing a shared selector for servlet write/read
24-Aug-2019 14:34:03.822 INFO [main] org.apache.catalina.startup.Catalina.load Initialization procssed in 1289 ms
24-Aug-2019 14:34:03.868 INFO [main] org.apache.catalina.core.StandardService.startInternal Startig service [Catalina]
24-Aug-2019 14:34:03.869 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Startin Servlet Engine: Apache Tomcat/8.5.41
24-Aug-2019 14:34:03.920 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deploWAR Deploying web application archive [/usr/local/tomcat/webapps/HelloWorld.war]
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.1.RELEASE)
2019-08-24 14:34:07.656 INFO 1 --- [ost-startStop-1] app.Application : Sarting Application v1 on 07d453022167 with PID 1 (/usr/local/tomcat/webapps/HelloWorld/WEB-INF/clases started by root in /usr/local/tomcat)
2019-08-24 14:34:07.680 INFO 1 --- [ost-startStop-1] app.Application : N active profile set, falling back to default profiles: default
2019-08-24 14:34:07.771 INFO 1 --- [ost-startStop-1] ationConfigEmbeddedWebApplicationContext : Rfreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6827b7a: startup date [Sat Aug 24 14:34:07 UTC 2019]; root of context hierarchy
2019-08-24 14:34:09.729 INFO 1 --- [ost-startStop-1] trationDelegate$BeanPostProcessorChecker : Ban 'org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration' of type [class rg.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration] is not eligible for etting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-08-24 14:34:09.936 INFO 1 --- [ost-startStop-1] trationDelegate$BeanPostProcessorChecker : Ban 'validator' of type [class org.springframework.validation.beanvalidation.LocalValidatorFactoryBan] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible forauto-proxying)
2019-08-24 14:34:10.019 INFO 1 --- [ost-startStop-1] o.s.web.context.ContextLoader : Rot WebApplicationContext: initialization completed in 2248 ms
2019-08-24 14:34:10.982 INFO 1 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mpping servlet: 'dispatcherServlet' to [/]
2019-08-24 14:34:10.984 INFO 1 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mpping filter: 'errorPageFilter' to: [/*]
2019-08-24 14:34:10.985 INFO 1 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mpping filter: 'characterEncodingFilter' to: [/*]
2019-08-24 14:34:10.986 INFO 1 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mpping filter: 'hiddenHttpMethodFilter' to: [/*]
2019-08-24 14:34:10.986 INFO 1 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mpping filter: 'httpPutFormContentFilter' to: [/*]
2019-08-24 14:34:10.986 INFO 1 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mpping filter: 'requestContextFilter' to: [/*]
2019-08-24 14:34:11.947 INFO 1 --- [ost-startStop-1] s.w.s.m.m.a.RequestMappingHandlerAdapter : Loking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebpplicationContext@6a827b7a: startup date [Sat Aug 24 14:34:07 UTC 2019]; root of context hierarchy
2019-08-24 14:34:12.145 INFO 1 --- [ost-startStop-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mpped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView or.springframework.boot.autoconfigure.web.BasicErrorController.errorHtm
l(javax.servlet.http.HttpServetRequest,javax.servlet.http.HttpServletResponse)
2019-08-24 14:34:12.150 INFO 1 --- [ost-startStop-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mpped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.Strig, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.ervlet.http.HttpServletRequest)
2019-08-24 14:34:12.234 INFO 1 --- [ost-startStop-1] o.s.w.s.handler.SimpleUrlHandlerMapping : Mpped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.RsourceHttpRequestHandler]
2019-08-24 14:34:12.235 INFO 1 --- [ost-startStop-1] o.s.w.s.handler.SimpleUrlHandlerMapping : Mpped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHtpRequestHandler]
2019-08-24 14:34:12.332 INFO 1 --- [ost-startStop-1] o.s.w.s.handler.SimpleUrlHandlerMapping : Mpped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resoure.ResourceHttpRequestHandler]
2019-08-24 14:34:12.664 INFO 1 --- [ost-startStop-1] o.s.j.e.a.AnnotationMBeanExporter : Rgistering beans for JMX exposure on startup
2019-08-24 14:34:12.694 INFO 1 --- [ost-startStop-1] app.Application : Lsting the beans provided by Spring Boot
2019-08-24 14:34:12.695 INFO 1 --- [ost-startStop-1] app.Application : Al initializations completed. App started.
2019-08-24 14:34:12.697 INFO 1 --- [ost-startStop-1] app.Application : Sarted Application in 6.196 seconds (JVM running for 10.827)
2019-08-24 14:34:12.849 INFO 1 --- [ost-startStop-1] org.apache.jasper.servlet.TldScanner : A least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger fo a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs uring scanning can improve startup time and JSP compilation time.
24-Aug-2019 14:34:12.906 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deploWAR Deployment of web application archive [/usr/local/tomcat/webapps/HelloWorld.war] has finished n [8,984] ms
24-Aug-2019 14:34:12.911 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deploDirectory Deploying web application directory [/usr/local/tomcat/webapps/host-manager]
24-Aug-2019 14:34:12.960 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deploDirectory Deployment of web application directory [/usr/local/tomcat/webapps/host-manager] has finshed in [49] ms
24-Aug-2019 14:34:12.961 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deploDirectory Deploying web application directory [/usr/local/tomcat/webapps/ROOT]
24-Aug-2019 14:34:13.003 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deploDirectory Deployment of web application directory [/usr/local/tomcat/webapps/ROOT] has finished in[42] ms
24-Aug-2019 14:34:13.009 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deploDirectory Deploying web application directory [/usr/local/tomcat/webapps/docs]
24-Aug-2019 14:34:13.034 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deploDirectory Deployment of web application directory [/usr/local/tomcat/webapps/docs] has finished in[25] ms
24-Aug-2019 14:34:13.035 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deploDirectory Deploying web application directory [/usr/local/tomcat/webapps/manager]
24-Aug-2019 14:34:13.076 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deploDirectory Deployment of web application directory [/usr/local/tomcat/webapps/manager] has finishedin [40] ms
24-Aug-2019 14:34:13.076 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deploDirectory Deploying web application directory [/usr/local/tomcat/webapps/examples]
24-Aug-2019 14:34:13.395 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deploDirectory Deployment of web application directory [/usr/local/tomcat/webapps/examples] has finishe in [318] ms
24-Aug-2019 14:34:13.400 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHanler ["http-nio-8080"]
24-Aug-2019 14:34:13.438 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHanler ["ajp-nio-8009"]
24-Aug-2019 14:34:13.466 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 643 ms
2019-08-24 14:54:19.868 INFO 1 --- [nio-8080-exec-6] app.Application : Request received by index.jsp
2019-08-24 14:54:19.970 INFO 1 --- [nio-8080-exec-5] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started
2019-08-24 14:54:20.027 INFO 1 --- [nio-8080-exec-5] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 57 ms
Open http://34.204.171.134/HelloWorld/ in a browser to see the HelloWorld web is application running.
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