docker開發_在basic image的基礎上創建自定義的image

2024-06-28 13:24:38

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方法一：docker commit

1. 跑一個basic image，docker新建了一個容器

root@Ubuntu:/home/thm/docker/test# docker run -i -t tanghuimin0713/ubuntu_amd64:14.04 /bin/bash WARNING: Local (127.0.0.1) DNS resolver found in resolv.conf and containers can't use it. Using default external servers : [8.8.8.8 8.8.4.4]root@5d807872b2ba:/#

2. 在容器內安裝apache2

root@5d807872b2ba:/# apt-get updateIgn http://archive.ubuntu.com trusty InRelease       Hit http://archive.ubuntu.com trusty Release.gpgHit http://archive.ubuntu.com trusty ReleaseHit http://archive.ubuntu.com trusty/main i386 PackagesGet:1 http://archive.ubuntu.com trusty/main Translation-en [762 kB]Fetched 762 kB in 34s (22.1 kB/s)                                                                                                              Reading package lists... Doneroot@5d807872b2ba:/# root@5d807872b2ba:/# apt-get install apache2Reading package lists... DoneBuilding dependency tree... DoneThe following extra packages will be installed:.........

3. 退出容器，將剛才裝了apache的容器創建成一個新的image

root@5d807872b2ba:/# exit  exitroot@ubuntu:/home/thm/docker/test# root@ubuntu:/home/thm/docker/test# docker ps -lCONTAINER ID        IMAGE                               COMMAND             CREATED             STATUS              PORTS               NAMES5d807872b2ba        tanghuimin0713/ubuntu_amd64:14.04   /bin/bash           7 minutes ago       Exit 0                                  nostalgic_heisenberg   root@ubuntu:/home/thm/docker/test# docker commit 5d807872b2ba tanghuimin0713/ubuntu_amd64_apache2:14.04e7df0b3ab526c83098d54e826b4e8e1f2c6efbe0a2511c3b06b79723bacfff52root@ubuntu:/home/thm/docker/test# docker imagesREPOSITORY                            TAG                 IMAGE ID            CREATED             VIRTUAL SIZEtanghuimin0713/ubuntu_amd64_apache2   14.04               e7df0b3ab526        3 seconds ago       248.1 MBscratch                               latest              6e1aa483880d        About an hour ago   0 Btanghuimin0713/ubuntu_amd64           14.04               6cfee0d4349b        4 hours ago         216.8 MBtanghuimin0713/ubuntu_amd64           latest              6cfee0d4349b        4 hours ago         216.8 MBtanghuimin0713/ubuntu_i386            14.04               ee57f53fe012        5 hours ago         216.8 MBtanghuimin0713/ubuntu_i386            latest              ee57f53fe012        5 hours ago         216.8 MBubuntu                                14.04               c4ff7513909d        9 days ago          225.4 MBubuntu                                trusty              c4ff7513909d        9 days ago          225.4 MBubuntu                                14.04.1             c4ff7513909d        9 days ago          225.4 MBubuntu                                latest              c4ff7513909d        9 days ago          225.4 MBubuntu                                14.10               75204fdb260b        9 days ago          230.1 MBubuntu                                utopic              75204fdb260b        9 days ago          230.1 MBubuntu                                12.04               822a01ae9a15        9 days ago          108.1 MBubuntu                                12.04.5             822a01ae9a15        9 days ago          108.1 MBubuntu                                PRecise             822a01ae9a15        9 days ago          108.1 MBubuntu                                12.10               c5881f11ded9        9 weeks ago         172.2 MBubuntu                                quantal             c5881f11ded9        9 weeks ago         172.2 MBubuntu                                13.04               463ff6be4238        9 weeks ago         169.4 MBubuntu                                raring              463ff6be4238        9 weeks ago         169.4 MBubuntu                                13.10               195eb90b5349        9 weeks ago         184.7 MBubuntu                                saucy               195eb90b5349        9 weeks ago         184.7 MBjamtur01/puppetmaster                 latest              99200e07340a        11 weeks ago        312.4 MBubuntu                                10.04               3db9c44f4520        4 months ago        183 MBubuntu                                lucid               3db9c44f4520        4 months ago        183 MBroot@ubuntu:/home/thm/docker/test#

4. run一下剛剛新創建的image，看看container內是否存在剛剛安裝的apache2

root@ubuntu:/home/thm/docker/test# docker run -t -i tanghuimin0713/ubuntu_amd64_apache2:14.04 /bin/bash WARNING: Local (127.0.0.1) DNS resolver found in resolv.conf and containers can't use it. Using default external servers : [8.8.8.8 8.8.4.4]root@081572d422c7:/# root@081572d422c7:/# root@081572d422c7:/# apacheapache2     apache2ctl  apachectl

5. 將新創建的image同步到docker hub

docker push tanghuimin0713/ubuntu_amd64_apache2

方法二：Dockerfile

1. 在一個空目錄下創建Dockerfile，并在Dockerfile中寫入如下類似批處理的語句

root@ubuntu:/home/thm/docker/test# touch Dockerfileroot@ubuntu:/home/thm/docker/test# vim Dockerfile

  1 FROM tanghuimin0713/ubuntu_amd64:14.04  2 RUN apt-get update  3 RUN apt-get install -y nginx  4 RUN echo "Hi, I am in your container" > /usr/share/nginx/html/index.html  5 EXPOSE 80

Dockerfile中相關命令解釋：

FROM：以"tanghuimin0713/ubuntu_amd64:14.04"為basic image運行一個container;

RUN：在container中執行命令;

EXPOSE：將鏡像的80端口暴露在外，這樣容器外可以看到這個端口并與其通信;

2. docker build創建image

root@ubuntu:/home/thm/docker/test# root@ubuntu:/home/thm/docker/test# docker build -t="tanghuimin0713/ubuntu_amd64_nginx:14.04" .Uploading context  2.56 kBUploading context Step 0 : FROM tanghuimin0713/ubuntu_amd64:14.04 ---> 6cfee0d4349bStep 1 : RUN apt-get update ---> Running in dedead78ac76Ign http://archive.ubuntu.com trusty InReleaseHit http://archive.ubuntu.com trusty Release.gpgHit http://archive.ubuntu.com trusty ReleaseHit http://archive.ubuntu.com trusty/main i386 PackagesGet:1 http://archive.ubuntu.com trusty/main Translation-en [762 kB]Fetched 762 kB in 2min 16s (5571 B/s)Reading package lists... ---> 3af4720f8ec3Step 2 : RUN apt-get install -y nginx ---> Running in e6a4a63286feReading package lists...Building dependency tree...The following extra packages will be installed:.........Processing triggers for libc-bin (2.19-0ubuntu6) ...Processing triggers for sgml-base (1.26+nmu4ubuntu1) ... ---> 409a0d5cd91bStep 3 : RUN echo "Hi, I am in your container" > /usr/share/nginx/html/index.html ---> Running in 783d8789509c ---> 9a5d96a41a0bStep 4 : EXPOSE 80 ---> Running in a2e24fc2d4b9 ---> 6cd5691b7c8cSuccessfully built 6cd5691b7c8cRemoving intermediate container dedead78ac76Removing intermediate container e6a4a63286feRemoving intermediate container 783d8789509cRemoving intermediate container a2e24fc2d4b9root@ubuntu:/home/thm/docker/test#

3. 查看image是否創建成功

root@ubuntu:/home/thm/docker/test# docker imagesREPOSITORY                          TAG                 IMAGE ID            CREATED             VIRTUAL SIZEtanghuimin0713/ubuntu_amd64_nginx   14.04               6cd5691b7c8c        30 seconds ago      259.2 MBscratch                             latest              6e1aa483880d        2 hours ago         0 Btanghuimin0713/ubuntu_amd64         14.04               6cfee0d4349b        5 hours ago         216.8 MBtanghuimin0713/ubuntu_amd64         latest              6cfee0d4349b        5 hours ago         216.8 MBtanghuimin0713/ubuntu_i386          14.04               ee57f53fe012        6 hours ago         216.8 MBtanghuimin0713/ubuntu_i386          latest              ee57f53fe012        6 hours ago         216.8 MBubuntu                              14.04.1             c4ff7513909d        9 days ago          225.4 MBubuntu                              14.04               c4ff7513909d        9 days ago          225.4 MBubuntu                              latest              c4ff7513909d        9 days ago          225.4 MBubuntu                              trusty              c4ff7513909d        9 days ago          225.4 MB

4. run一下新創建的image

root@ubuntu:/home/thm/docker/test# docker run -i -t tanghuimin0713/ubuntu_amd64_nginx:14.04 /bin/bashroot@45494a615738:/# root@45494a615738:/# which nginx/usr/sbin/nginx

nginx命令是存在的，成功。

5. 將新創建的image同步到docker hub

docker push tanghuimin0713/ubuntu_amd64_nginx:14.04

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