Docker容器-構建Tomcat業務鏡像

接着上一篇文章來構建Tomcat業務鏡像，上篇已經把tomcat基礎鏡像已經完成了。這次基於tomcat基礎鏡像構建實際業務鏡像。

退到tomcat目錄下，新建兩個業務用的目錄文件

[root@node6 /data/dockerfile/web/tomcat/tomcat-base]#cd ..
[root@node6 /data/dockerfile/web/tomcat]#mkdir tomcat-app1
[root@node6 /data/dockerfile/web/tomcat]#mkdir tomcat-app2

進入Tomcat-app1目錄下創建Dockerfile文件

[root@node6 /data/dockerfile/web/tomcat]#cd tomcat-app1
[root@node6 /data/dockerfile/web/tomcat/tomcat-app1]#vim Dockerfile
FROM 172.20.7.50/baseimages/centos-tomcat:8.5.33
LABEL maintainer "mr.luo <[email protected]>"

RUN mkdir -p /data/tomcat/webapps/myapp && useradd tomcat
ADD index.html  /data/tomcat/webapps/myapp
ADD run_tomcat.sh /apps/tomcat/bin/run_tomcat.sh
COPY server.xml /apps/tomcat/conf/server.xml
RUN chown -R tomcat.tomcat /apps /data/tomcat/webapps

EXPOSE 8080

CMD ["/apps/tomcat/bin/run_tomcat.sh"]

創建測試文件

[root@node6 /data/dockerfile/web/tomcat/tomcat-app1]#vim index.html
<h1>tomcat testapp1</h1>

拷貝server.xml文件到當前目錄下。

[root@node6 /data/dockerfile/web/tomcat/tomcat-app1]#cp /usr/local/apache-tomcat-8.5.33/conf/server.xml ./

編輯server.xml文件修改host的路徑

[root@node6 /data/dockerfile/web/tomcat/tomcat-app1]#vim server.xml
<Host name="localhost"  appBase="/data/tomcat/webapps" unpackWARs="true" autoDeploy="true">

創建tomcat啓動腳本、並給腳本添加執行權限

[root@node6 /data/dockerfile/web/tomcat/tomcat-app1]#vim run_tomcat.sh 
#!/bin/bash
echo "1.1.1.1 abc.test.com" >> /etc/hosts
echo "nameserver 223.5.5.5" > /etc/resolv.conf

su - tomcat -c "/apps/tomcat/bin/catalina.sh start"
su - tomcat -c "tail -f /etc/hosts"

# 給腳本添加執行權限
[root@node6 /data/dockerfile/web/tomcat/tomcat-app1]#chmod +x run_tomcat.sh

創建docker build 腳本

[root@node6 /data/dockerfile/web/tomcat/tomcat-app1]#vim build-command.sh
#!/bin/bash
# Dockerfile build shell
docker build -t 172.20.7.50/baseimages/centos-tomcat-web:app1  .

開始製作鏡像

[root@node6 /data/dockerfile/web/tomcat/tomcat-app1]#bash build-command.sh 
Sending build context to Docker daemon  13.31kB
Step 1/9 : FROM 172.20.7.50/baseimages/centos-tomcat:8.5.33
---> 872c70dd2181
Step 2/9 : LABEL maintainer "mr.luo <[email protected]>"
---> Using cache
---> e97895b822f7
Step 3/9 : RUN mkdir -p /data/tomcat/webapps/myapp && useradd tomcat
---> Using cache
---> 72bb5e03ae16
Step 4/9 : ADD index.html  /data/tomcat/webapps/myapp
---> 1f7213ebca35
Step 5/9 : ADD run_tomcat.sh /apps/tomcat/bin/run_tomcat.sh
---> 810821a8e3ec
Step 6/9 : COPY server.xml /apps/tomcat/conf/server.xml
---> c0e804cc499d
Step 7/9 : RUN chown -R tomcat.tomcat /apps /data/tomcat/webapps
---> Running in a4a8923b3d14
Removing intermediate container a4a8923b3d14
---> ef1bc1eeba9c
Step 8/9 : EXPOSE 8080
---> Running in f0932e1e1990
Removing intermediate container f0932e1e1990
---> bc4e67b65e5e
Step 9/9 : CMD ["/apps/tomcat/bin/run_tomcat.sh"]
---> Running in cba94e6d84e1
Removing intermediate container cba94e6d84e1
---> 3714c600c51e
Successfully built 3714c600c51e
Successfully tagged 172.20.7.50/baseimages/centos-tomcat-web:app1

啓動剛製作好的鏡像，測試tomcat是否製作成功

[root@node6 /data/dockerfile/web/tomcat/tomcat-app1]#docker run --name tom1 -it -d -p 8801:8080 172.20.7.50/baseimages/centotomcat-web:app1 
6b77dd85d8a74b7475bd3340e501d3bcd0019ffdad2ea0505ca371f52c3d2ae6

查看是否在後臺正常運行

[root@node6 /data/dockerfile/web/tomcat/tomcat-app1]#docker ps 
CONTAINER ID        IMAGE                                           COMMAND                  CREATED             STATUS              PORTS                    NAMES
6b77dd85d8a7        172.20.7.50/baseimages/centos-tomcat-web:app1   "/apps/tomcat/bin/ru…"   6 seconds ago       Up 5 seconds        0.0.0.0:8801->8080/tcp   tom1

用物理機的瀏覽器測試

製作第二個就非常簡單了只需要在第一個上面改下名稱即可

先拷貝tomcat-app1下所有文件到tomcat-app2下即可

[root@node6 /data/dockerfile/web/tomcat/tomcat-app1]# cd ..
[root@node6 /data/dockerfile/web/tomcat]#cp -rf tomcat-app1/* tomcat-app2/

修改index.html標識爲tomcat testapp2即可

[root@node6 /data/dockerfile/web/tomcat/tomcat-app2]#vim index.html 
<h1>tomcat testapp2</h1>

修改docker build腳本centos-tomcat-web:app1改成centos-tomcat-web:app2即可，表示這是app2的鏡像

[root@node6 /data/dockerfile/web/tomcat/tomcat-app2]#vim build-command.sh 
#!/bin/bash
# Dockerfile build shell
docker build -t 172.20.7.50/baseimages/centos-tomcat-web:app2 .

查看所有文件，上述除了build-command.sh、index.html需要修改其它不用動保持原樣

[root@node6 /data/dockerfile/web/tomcat/tomcat-app2]#ll
total 24
-rw-r--r-- 1 root root   77 Nov 23 20:56 build-command.sh
-rw-r--r-- 1 root root  398 Nov 23 20:15 Dockerfile
-rw-r--r-- 1 root root   25 Nov 23 20:15 index.html
-rwxr-xr-x 1 root root  205 Nov 23 20:15 run_tomcat.sh
-rw------- 1 root root 7524 Nov 23 20:15 server.xml

開始製作第二個鏡像文件

[root@node6 /data/dockerfile/web/tomcat/tomcat-app2]#bash build-command.sh 
Sending build context to Docker daemon  13.31kB
Step 1/9 : FROM 172.20.7.50/baseimages/centos-tomcat:8.5.33
 ---> 872c70dd2181
Step 2/9 : LABEL maintainer "mr.luo <[email protected]>"
 ---> Using cache
 ---> e97895b822f7
Step 3/9 : RUN mkdir -p /data/tomcat/webapps/myapp && useradd tomcat
 ---> Using cache
 ---> 72bb5e03ae16
Step 4/9 : ADD index.html  /data/tomcat/webapps/myapp
 ---> 5fb4cdb0e0ca
Step 5/9 : ADD run_tomcat.sh /apps/tomcat/bin/run_tomcat.sh
 ---> ca7037e43dd6
Step 6/9 : COPY server.xml /apps/tomcat/conf/server.xml
 ---> 944ac27defb1
Step 7/9 : RUN chown -R tomcat.tomcat /apps /data/tomcat/webapps
 ---> Running in ec169b000f74
Removing intermediate container ec169b000f74
 ---> 168b359f2e83
Step 8/9 : EXPOSE 8080
 ---> Running in 86726c38a44a
Removing intermediate container 86726c38a44a
 ---> d4f8cf67c70c
Step 9/9 : CMD ["/apps/tomcat/bin/run_tomcat.sh"]
 ---> Running in b323b8b073ca
Removing intermediate container b323b8b073ca
 ---> 612035ab8d3e
Successfully built 612035ab8d3e
Successfully tagged 172.20.7.50/baseimages/centos-tomcat-web:app2

查看所有鏡像文件

[root@node6 /data/dockerfile/web/tomcat/tomcat-app2]#docker images 
REPOSITORY                                 TAG                 IMAGE ID            CREATED             SIZE
172.20.7.50/baseimages/centos-tomcat-web   app2                612035ab8d3e        10 seconds ago      787MB
172.20.7.50/baseimages/centos-tomcat-web   app1                3714c600c51e        37 minutes ago      787MB
172.20.7.50/baseimages/centos-tomcat       8.5.35              872c70dd2181        2 hours ago         773MB
172.20.7.50/baseimages/centos7.5-jdk       8.191               19e9d5aa96b6        2 hours ago         759MB
172.20.7.50/baseimages/centos-base         7.5.1804            1f6c2c9e089e        2 hours ago         363MB
centos                                     7.5.1804            76d6bc25b8a5        6 weeks ago         200MB

啓動容器、並查看當前運行的容器列表

[root@node6 /data/dockerfile/web/tomcat/tomcat-app2]#docker run --name tom2 -d -p 8802:8080 172.20.7.50/baseimages/centos-toat-web:app2
e9f08fce2923fc9dd49edf12472d2ef98994126e920168da80c8694ef4a8f0bc
[root@node6 /data/dockerfile/web/tomcat/tomcat-app2]#docker ps
CONTAINER ID        IMAGE                                           COMMAND                  CREATED             STATUS              PORTS                    NAMES
e9f08fce2923        172.20.7.50/baseimages/centos-tomcat-web:app2   "/apps/tomcat/bin/ru…"   6 seconds ago       Up 6 seconds        0.0.0.0:8802->8080/tcp   tom2
6b77dd85d8a7        172.20.7.50/baseimages/centos-tomcat-web:app1   "/apps/tomcat/bin/ru…"   14 minutes ago      Up 14 minutes       0.0.0.0:8801->8080/tcp   tom1

用物理機的瀏覽器打開訪問tom2是否正常工作

有什麼不足的地方還望各位大表哥在評論區指出來！！！