build docker image

#make dockerfile

[root@k8s-master docker-tomcat-war]# ll
합계 20
-rw-r--r--. 1 root root  110  4월  7 08:46 Dockerfile
-rw-r--r--. 1 root root  681  4월  7 08:39 README.md
-rw-r--r--. 1 root root   96  4월  7 08:39 docker-compose.yml
-rw-r--r--. 1 root root 4606  4월  7 08:39 sample.war

[root@k8s-master docker-tomcat-war]# vi Dockerfile

FROM tomcat
MAINTAINER gnoti@gmail.com

ADD sample.war /usr/local/tomcat/webapps/

CMD ["catalina.sh", "run"]

#build dockerfile

[root@k8s-master docker-tomcat-war]# docker build -t gnoti_tomcat .
Sending build context to Docker daemon     64kB
Step 1/4 : FROM tomcat
latest: Pulling from library/tomcat
f15005b0235f: Pull complete
41ebfd3d2fd0: Pull complete
b998346ba308: Pull complete
f01ec562c947: Pull complete
74c11ae3efe8: Pull complete
3a7e595a3ef5: Pull complete
208407758d73: Pull complete
b5238120a381: Pull complete
1716556aae46: Pull complete
1336a11b2bd2: Pull complete
Digest: sha256:c0ba286d9903006423ff4e2818845f1cc4046aa829bbfbc9b96f887423cd9f47
Status: Downloaded newer image for tomcat:latest
 ---> e36064f7c6f0
Step 2/4 : MAINTAINER gnoti@gmail.com
 ---> Running in 942dfec63c5e
Removing intermediate container 942dfec63c5e
 ---> c5ae81e40f59
Step 3/4 : ADD sample.war /usr/local/tomcat/webapps/
 ---> 68ac1efba791
Step 4/4 : CMD ["catalina.sh", "run"]
 ---> Running in 0191df313b61
Removing intermediate container 0191df313b61
 ---> 69264587b4d8
Successfully built 69264587b4d8
Successfully tagged gnoti_tomcat:latest
[root@k8s-master docker-tomcat-war]#

#exec tomcat on docker

[root@k8s-master docker-tomcat-war]# docker run -d -i -t --name=gtomcat -p 8812:8080 gnoti_tomcat
64d7a73c58265eaf7fd2c385096e5652673cbda21fb35d093a2f25a023318905
[root@k8s-master docker-tomcat-war]# docker images
REPOSITORY                           TAG                 IMAGE ID            CREATED             SIZE
gnoti_tomcat                         latest              69264587b4d8        2 minutes ago       528MB
tomcat                               latest              e36064f7c6f0        5 days ago          528MB
k8s.gcr.io/kube-proxy                v1.18.0             43940c34f24f        12 days ago         117MB
k8s.gcr.io/kube-controller-manager   v1.18.0             d3e55153f52f        12 days ago         162MB
k8s.gcr.io/kube-apiserver            v1.18.0             74060cea7f70        12 days ago         173MB
k8s.gcr.io/kube-scheduler            v1.18.0             a31f78c7c8ce        12 days ago         95.3MB
quay.io/coreos/flannel               v0.12.0-amd64       4e9f801d2217        3 weeks ago         52.8MB
k8s.gcr.io/pause                     3.2                 80d28bedfe5d        7 weeks ago         683kB
k8s.gcr.io/coredns                   1.6.7               67da37a9a360        2 months ago        43.8MB
k8s.gcr.io/etcd                      3.4.3-0             303ce5db0e90        5 months ago        288MB
[root@k8s-master docker-tomcat-war]# docker ps
CONTAINER ID        IMAGE                  COMMAND                  CREATED             STATUS              PORTS                    NAMES
64d7a73c5826        gnoti_tomcat           "catalina.sh run"        11 seconds ago      Up 10 seconds       0.0.0.0:8812->8080/tcp   gtomcat
a1c4f5545bdd        67da37a9a360           "/coredns -conf /etc…"   2 days ago          Up 2 days                                    k8s_coredns_coredns-66bff467f8-glbj5_kube-system_e46de87a-2c35-4078-9428-ca1859c2dc1a_0
c6eb3465a519        k8s.gcr.io/pause:3.2   "/pause"                 2 days ago          Up 2 days                                    k8s_POD_coredns-66bff467f8-glbj5_kube-system_e46de87a-2c35-4078-9428-ca1859c2dc1a_0
866f0f4c0408        67da37a9a360           "/coredns -conf /etc…"   2 days ago          Up 2 days                                    k8s_coredns_coredns-66bff467f8-s9zp2_kube-system_1a8ab80b-f071-4249-be01-8ab751e1dd7f_0
a91da664513c        k8s.gcr.io/pause:3.2   "/pause"                 2 days ago          Up 2 days                                    k8s_POD_coredns-66bff467f8-s9zp2_kube-system_1a8ab80b-f071-4249-be01-8ab751e1dd7f_0
1433b8be15e4        43940c34f24f           "/usr/local/bin/kube…"   2 days ago          Up 2 days                                    k8s_kube-proxy_kube-proxy-wd7dj_kube-system_4d48caaa-b3fc-4d6b-a0ae-53d3609103df_0
685cd05d7787        k8s.gcr.io/pause:3.2   "/pause"                 2 days ago          Up 2 days                                    k8s_POD_kube-proxy-wd7dj_kube-system_4d48caaa-b3fc-4d6b-a0ae-53d3609103df_0
3ca22f014ea8        74060cea7f70           "kube-apiserver --ad…"   2 days ago          Up 2 days                                    k8s_kube-apiserver_kube-apiserver-k8s-master_kube-system_0a3da68d85d96749758c18fe76d428df_0
3d95ca9e2470        303ce5db0e90           "etcd --advertise-cl…"   2 days ago          Up 2 days                                    k8s_etcd_etcd-k8s-master_kube-system_94ee592d56c24040e2f1c23be755f008_0
a3bbf2f7244f        a31f78c7c8ce           "kube-scheduler --au…"   2 days ago          Up 2 days                                    k8s_kube-scheduler_kube-scheduler-k8s-master_kube-system_5795d0c442cb997ff93c49feeb9f6386_0
7d754c790518        d3e55153f52f           "kube-controller-man…"   2 days ago          Up 2 days                                    k8s_kube-controller-manager_kube-controller-manager-k8s-master_kube-system_16c0b106893c92aa29fe120498337172_0
cb0a26a1f8f9        k8s.gcr.io/pause:3.2   "/pause"                 2 days ago          Up 2 days                                    k8s_POD_kube-apiserver-k8s-master_kube-system_0a3da68d85d96749758c18fe76d428df_0
2435a57f6fda        k8s.gcr.io/pause:3.2   "/pause"                 2 days ago          Up 2 days                                    k8s_POD_etcd-k8s-master_kube-system_94ee592d56c24040e2f1c23be755f008_0
a47c534ef8a2        k8s.gcr.io/pause:3.2   "/pause"                 2 days ago          Up 2 days                                    k8s_POD_kube-scheduler-k8s-master_kube-system_5795d0c442cb997ff93c49feeb9f6386_0
d919de94a47b        k8s.gcr.io/pause:3.2   "/pause"                 2 days ago          Up 2 days                                    k8s_POD_kube-controller-manager-k8s-master_kube-system_16c0b106893c92aa29fe120498337172_0
[root@k8s-master docker-tomcat-war]#

#text tomcat 

[root@k8s-master docker-tomcat-war]# docker exec -i -t gtomcat /bin/bash
root@64d7a73c5826:/usr/local/tomcat# ls /usr/local/tomcat/webapps/
sample sample.war
root@64d7a73c5826:/usr/local/tomcat# exit
exit
[root@k8s-master docker-tomcat-war]# curl http://192.168.0.162:8812/sample/
<html>
<head>
<title>Sample "Hello, World" Application</title>
</head>
<body bgcolor=white>

<table border="0">
<tr>
<td>
<img src="images/tomcat.gif">
</td>
<td>
<h1>Sample "Hello, World" Application</h1>
<p>This is the home page for a sample application used to illustrate the
source directory organization of a web application utilizing the principles
outlined in the Application Developer's Guide.
</td>
</tr>
</table>

<p>To prove that they work, you can execute either of the following links:
<ul>
<li>To a <a href="hello.jsp">JSP page</a>.
<li>To a <a href="hello">servlet</a>.
</ul>

</body>
</html>
[root@k8s-master docker-tomcat-war]#