目錄一、dockerfile簡(jiǎn)介什么是dockerfiledockerfile是什么為什么要用dockerfileDockerfile、Docker鏡像和Docker容器的關(guān)系二、DockerFile需要注意的編寫(xiě)規(guī)范三、Docekrfile指令解析四、常用的Dockerfile指令詳解、格式與用法4.1 FROM必須4.2 MAINTAINER4.3 USER4.4 ENV必須4.5 VOLUME4.6 EXPOSE4.7 COPY4.8 ADD4.9 WORKDIR4.10 RUN必須4.11 CMD五、docker build構(gòu)建鏡像六、【實(shí)戰(zhàn)】docker自定義鏡像1、編寫(xiě)Dockerfile2、構(gòu)建鏡像3、查看鏡像七、總結(jié)相關(guān)文章一、dockerfile簡(jiǎn)介什么是dockerfileDockerfile 是一個(gè)用來(lái)構(gòu)建鏡像的文本文件文本內(nèi)容包含了一條條構(gòu)建鏡像所需的指令(Instruction)和操作命令;每一條指令構(gòu)建一層鏡像因此每一條指令的內(nèi)容就是描述該層鏡像應(yīng)當(dāng)如何構(gòu)建也就是你要執(zhí)行的操作命令。dockerfile是什么dockerfile是純文本文件dockerfile是用來(lái)構(gòu)建鏡像的dockerfile 用于指示 docker image build 命令自動(dòng)構(gòu)建Image的源代碼dockerfile構(gòu)建鏡像的的格式span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefdocker/spanspan stylecolor:#98c379 build/spanspan stylecolor:#d19a66 -t/spanspan stylecolor:#98c379 要打的鏡像名:版本號(hào)/spanspan stylecolor:#98c379 Dockerfile路徑/span/code/span/spandockerfile構(gòu)建鏡像的的實(shí)例span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefdocker/spanspan stylecolor:#98c379 build/spanspan stylecolor:#d19a66 -t/spanspan stylecolor:#98c379 work:v1/spanspan stylecolor:#98c379 ./span/code/span/span為什么要用dockerfile?在dockerhub中官方提供很多鏡像已經(jīng)能滿(mǎn)足我們99的服務(wù)了,為什么還需要自定義鏡像?解析是官方的鏡像很多同時(shí)也可以滿(mǎn)足我們99的服務(wù)但是如果有的公司要做自己的產(chǎn)品那么官網(wǎng)的鏡像肯定是沒(méi)有的這時(shí)候就需要用到自定義鏡像而自定義鏡像就是dockerfile構(gòu)建成的我們可以用dockerfile自定義寫(xiě)需要的操作來(lái)用dockerfile的指令來(lái)實(shí)現(xiàn)最終采用docker build來(lái)構(gòu)建鏡像構(gòu)建完鏡像可以采用docker save命令打成tar包以便于日后在其他服務(wù)器上使用也可以采用docker push提交到私有鏡像倉(cāng)庫(kù)或dockerhub中。如上圖所示Dockerfile是獨(dú)立于本地docker實(shí)例的一個(gè)文本文件用于自動(dòng)化地構(gòu)建具有特定功能的docker鏡像。Dockerfile鏡像構(gòu)建三部曲1構(gòu)建Dockerfile文件2采用docker build命令構(gòu)建鏡像3采用docker run命令依據(jù)鏡像運(yùn)行容器實(shí)例。Dockerfile、Docker鏡像和Docker容器的關(guān)系從應(yīng)用軟件開(kāi)發(fā)角度來(lái)看它們分別表示軟件開(kāi)發(fā)的三個(gè)階段1Dockerfile是軟件開(kāi)發(fā)的原材料2Docker鏡像是軟件的交付品3Docker容器是Docker交付鏡像的實(shí)例化代表軟件的實(shí)際運(yùn)行過(guò)程?？偨Y(jié)Dockerfile面向開(kāi)發(fā)Docker鏡像為交付標(biāo)準(zhǔn)Docker容器與部署、運(yùn)維相關(guān)三則相輔相成缺一不可他們是Docker的三大基石。Docker在實(shí)際運(yùn)行中Dockerfile、Docker鏡像、Docker容器三者的運(yùn)作內(nèi)容如下所示1、Dockerfile定義了進(jìn)程需要的一切內(nèi)容包括代碼執(zhí)行、文件/環(huán)境變量、依賴(lài)包、運(yùn)行環(huán)境、操作系統(tǒng)發(fā)行版本、服務(wù)進(jìn)程、內(nèi)核進(jìn)程等等很多與操作系統(tǒng)底層相關(guān)的內(nèi)容。2、通過(guò)docker build指令會(huì)生成一個(gè)Docker鏡像它是為用戶(hù)提供各種服務(wù)的基礎(chǔ)3、Docker容器則是一個(gè)實(shí)例化的服務(wù)進(jìn)程。二、DockerFile需要注意的編寫(xiě)規(guī)范1. # 代表注釋2.指令必須要大寫(xiě)后面最少需要帶一個(gè)參數(shù)最多無(wú)限制;3.執(zhí)行dockerfile的時(shí)候指令是按照從上到下的順序執(zhí)行的三、Docekrfile指令解析注意指令全部都必須為大寫(xiě)后面跟的是你要執(zhí)行的操作命令指令功能簡(jiǎn)介FROM指定構(gòu)建新image是使用的基礎(chǔ)image通常必須是Dockerfile的第一個(gè)有效指令定義一個(gè)基礎(chǔ)鏡像。LABEL附加到image之上的元數(shù)據(jù)鍵值格式定義一些元數(shù)據(jù)。ENV以鍵值格式設(shè)定環(huán)境變量可被其后的指令所調(diào)用且基于新生成的image運(yùn)行的Container中也會(huì)存在這些變量。RUN以FROM中定義的image為基礎(chǔ)環(huán)境運(yùn)行指令命令生成結(jié)果將作為新image的一個(gè)鏡像層并可由后續(xù)指令所使用。RUN后跟要執(zhí)行的命令。CMD基于dockerfile生成的image運(yùn)行的container時(shí)CMD能夠指定容器中默認(rèn)運(yùn)行的程序因而其只應(yīng)該定義一次。ENTRYPOINT類(lèi)似于CMD指令的功能但不能被命令行指定要運(yùn)行的應(yīng)用程序覆蓋且與CMD共存時(shí)CMD的內(nèi)容將作為該指令中定義的程序的參數(shù)。WORKDIR相當(dāng)于cd切換目錄的命令如果切換的那個(gè)地方?jīng)]有哪個(gè)目錄則會(huì)自動(dòng)創(chuàng)建一個(gè)目錄。COPY相當(dāng)于cp命令復(fù)制主機(jī)上或者前一階段構(gòu)建結(jié)果中需要使用--from選項(xiàng)文件或目錄生成新的鏡像。ADD與COPY指令的功能相似但ADD傳輸壓縮包的時(shí)候是可以解壓的。VOLUME指定基于新生成的Image運(yùn)行Container時(shí)期望作為volume使用的目錄。EXPOSE指定基于新生成的lmage運(yùn)行Container時(shí)期望 暴露的端口但實(shí)際暴露與否取決于docker run”命令的選項(xiàng)支持TCP和UDP協(xié)議。USER為Dockerfile中該指令后面的RUN、CMD和ENTRYPOING指令中要運(yùn)行的應(yīng)用程序指定運(yùn)行者身份UID以及一個(gè)可選的GID。ARG定義專(zhuān)用于build過(guò)程中的變量但僅對(duì)該指標(biāo)之后的調(diào)用生效其值可由命令行選項(xiàng)--build-arg進(jìn)行傳遞。ONBUILD觸發(fā)器生效于由該Dockerfile 構(gòu)建出的新l/mage被用于另一個(gè)Dockerfile中的FROM指令作為基礎(chǔ)鏡像時(shí)。STOPSIGNAL用于通知Container終止的系統(tǒng)調(diào)用信號(hào)。HEALTHCHECK定義檢測(cè)容器應(yīng)用的健康狀態(tài)的具體方法。SHELL為容器定義運(yùn)行時(shí)使用的默認(rèn)shel程序Linux系統(tǒng)默認(rèn)使用 [/bin/sh”-c], Windows默認(rèn)使用 [’cmd, /S,/C]。四、常用的Dockerfile指令詳解、格式與用法必須是寫(xiě)dockerfile必須有的沒(méi)有加的是可選的。4.1 FROM必須指定一個(gè)基礎(chǔ)鏡像必須為第一個(gè)命令。格式span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefFROM/spanspan stylecolor:#98c379 基礎(chǔ)鏡像/span/code/span/span舉例一個(gè)nvidia、cuda10.1的centos7基礎(chǔ)鏡像span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefFROM/spanspan stylecolor:#98c379 nvidia/cuda:10.1-cudnn7-devel-centos7/span/code/span/span4.2 MAINTAINER維護(hù)者信息可以寫(xiě)郵箱編輯人等等。格式span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefMAINTAINER/spanspan stylecolor:#98c379 郵箱/名字/span/code/span/span舉例展示郵箱和名字span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefMAINTAINER/spanspan stylecolor:#98c379 liucy/span span stylecolor:#61afefMAINTAINER/spanspan stylecolor:#98c379 121212qq.com/span span stylecolor:#61afefMAINTAINER/spanspan stylecolor:#98c379 121212163.com/span/code/span/span4.3 USER指定運(yùn)行容器時(shí)的用戶(hù)名或 UID后續(xù)的 RUN 也會(huì)使用指定用戶(hù)。使用USER指定用戶(hù)時(shí)可以使用用戶(hù)名、UID或GID或是兩者的組合。當(dāng)服務(wù)不需要管理員權(quán)限時(shí)可以通過(guò)該命令指定運(yùn)行用戶(hù)。并且可以在之前創(chuàng)建所需要的用戶(hù)格式span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefUSER/spanspan stylecolor:#98c379 用戶(hù)名/span span stylecolor:#abb2bf/span span stylecolor:#61afefUSER/spanspan stylecolor:#98c379 user:group /span span stylecolor:#abb2bf/span span stylecolor:#61afefUSER/spanspan stylecolor:#98c379 uid /span span stylecolor:#abb2bf/span span stylecolor:#61afefUSER/spanspan stylecolor:#98c379 uid:gid /span span stylecolor:#abb2bf/span span stylecolor:#61afefUSER/spanspan stylecolor:#98c379 user:gid /span span stylecolor:#abb2bf/span span stylecolor:#61afefUSER/spanspan stylecolor:#98c379 uid:group/span/code/span/span舉例指定root用戶(hù)span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefUSER/spanspan stylecolor:#98c379 root/span/code/span/span4.4 ENV必須設(shè)置環(huán)境變量格式span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefENV/spanspan stylecolor:#98c379 環(huán)境變量路徑/span/code/span/span舉例設(shè)置jdk1.8的環(huán)境變量span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefENV/spanspan stylecolor:#98c379 JAVA_HOME/usr/local/jdk1.8.0_333//span span stylecolor:#61afefENV/spanspan stylecolor:#98c379 export/spanspan stylecolor:#98c379 JRE_HOME/spanspan stylecolor:#e06c75$JAVA_HOME/spanspan stylecolor:#98c379/jre/span span stylecolor:#61afefENV/spanspan stylecolor:#98c379 export/spanspan stylecolor:#98c379 CLASSPATH.:/spanspan stylecolor:#e06c75$JAVA_HOME/spanspan stylecolor:#98c379/lib:/spanspan stylecolor:#e06c75$JRE_HOME/spanspan stylecolor:#98c379/lib/span span stylecolor:#61afefENV/spanspan stylecolor:#98c379 PATH/spanspan stylecolor:#e06c75$JAVA_HOME/spanspan stylecolor:#98c379/bin:/spanspan stylecolor:#e06c75$PATH/span/code/span/span4.5 VOLUME用于指定持久化目錄指定此目錄可以被掛載出去格式span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefVOLUME/spanspan stylecolor:#98c379 掛載路徑/span/code/span/span舉例掛載到/data目錄span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefVOLUME/spanspan stylecolor:#abb2bf [/spanspan stylecolor:#98c379/data/spanspan stylecolor:#abb2bf]/span/code/span/span4.6 EXPOSE設(shè)置端口EXPOSE指令是聲明運(yùn)行時(shí)容器提供服務(wù)端口這只是一個(gè)聲明在運(yùn)行時(shí)并不會(huì)因?yàn)檫@個(gè)聲明應(yīng)該就會(huì)開(kāi)啟這個(gè)端口的服務(wù)。在Dockerfile中寫(xiě)入這樣的聲明有兩個(gè)好處是幫助鏡像使用者理解這個(gè)鏡像服務(wù)的守護(hù)端口以方便配置映射在運(yùn)行是使隨機(jī)端口映射時(shí)也就是docker run -P(大寫(xiě))時(shí)會(huì)自動(dòng)隨機(jī)映射EXPOSE端口。格式span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefEXPOSE/spanspan stylecolor:#98c379 端口號(hào)/span/code/span/span舉例設(shè)置一個(gè)8080端口span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefEXPOSE/spanspan stylecolor:#d19a66 8080/span/code/span/span4.7 COPY復(fù)制文件相當(dāng)于linux命令中的cp命令功能類(lèi)似ADD但是是不會(huì)自動(dòng)解壓文件也不能訪問(wèn)網(wǎng)絡(luò)資源格式span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefCOPY/spanspan stylecolor:#98c379 源文件及路徑/spanspan stylecolor:#98c379 目標(biāo)路徑/span/code/span/span舉例復(fù)制一個(gè)mysql到/usr/local/下span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefCOPY/spanspan stylecolor:#98c379 /root/mysql/spanspan stylecolor:#98c379 /usr/local//span/code/span/span4.8 ADD將本地文件添加到容器中tar類(lèi)型文件會(huì)自動(dòng)解壓(網(wǎng)絡(luò)壓縮資源不會(huì)被解壓)可以訪問(wèn)網(wǎng)絡(luò)資源類(lèi)似wget。格式span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefADD/spanspan stylecolor:#98c379 源文件及路徑/spanspan stylecolor:#98c379 目標(biāo)路徑/span/code/span/span舉例移動(dòng)一個(gè)mysql-2-2.tarspan stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefADD/spanspan stylecolor:#98c379 /usr/local/mysql-2-2.tar/spanspan stylecolor:#98c379 /root//span/code/span/span4.9 WORKDIR切換目錄相當(dāng)于linux命令中的cd命令切換到這個(gè)目錄進(jìn)入容器時(shí)就是這個(gè)目錄所以workdir就屬于啟動(dòng)默認(rèn)的目錄。格式span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefWORKDIR/spanspan stylecolor:#98c379 目錄名/span/code/span/span舉例設(shè)置啟動(dòng)就在/data/目錄span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefWORKDIR/spanspan stylecolor:#98c379 /data//span/code/span/span4.10 RUN必須構(gòu)建鏡像時(shí)執(zhí)行的命令執(zhí)行的命令就是你指定的要他干什么使用linux命令就可以。格式span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefRUN/spanspan stylecolor:#98c379 要執(zhí)行的命令/span/code/span/span舉例打鏡像時(shí)下載一個(gè)netstat命令span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefRUN/spanspan stylecolor:#98c379 yum/spanspan stylecolor:#d19a66 -y/spanspan stylecolor:#98c379 install/spanspan stylecolor:#98c379 net-tools/span/code/span/span4.11 CMD構(gòu)建鏡像后調(diào)用也就是在容器啟動(dòng)時(shí)才進(jìn)行調(diào)用。寫(xiě)一次dockerfile只能出現(xiàn)一次CMD而出現(xiàn)CMD的地方就屬于結(jié)尾如果下面有RUN指令則都不執(zhí)行。格式span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefCMD/spanspan stylecolor:#98c379 要執(zhí)行的命令/span/code/span/span舉例執(zhí)行刪除dockerfile打完鏡像要?jiǎng)h除dockerfilespan stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefCMD/spanspan stylecolor:#98c379 rm/spanspan stylecolor:#d19a66 -rf/spanspan stylecolor:#98c379 /data/dockerfile/span/code/span/span五、docker build構(gòu)建鏡像dockerfile構(gòu)建鏡像的的格式span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefdocker/spanspan stylecolor:#98c379 build/spanspan stylecolor:#d19a66 -t/spanspan stylecolor:#98c379 要打的鏡像名:版本號(hào)/spanspan stylecolor:#98c379 Dockerfile路徑/span/code/span/spandockerfile構(gòu)建鏡像的的實(shí)例span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefdocker/spanspan stylecolor:#98c379 build/spanspan stylecolor:#d19a66 -t/spanspan stylecolor:#98c379 work:v1/spanspan stylecolor:#98c379 ./span/code/span/span六、【實(shí)戰(zhàn)】docker自定義鏡像說(shuō)明此處只是測(cè)試使用并不能用到生產(chǎn)中生產(chǎn)中要根據(jù)自己的情況來(lái)寫(xiě)可以構(gòu)建成鏡像也可以創(chuàng)建容器可以進(jìn)入容器查看這些文件但是web頁(yè)面訪問(wèn)不到因?yàn)闆](méi)有加入jar包之類(lèi)的可以自行放入一個(gè)jar包端口設(shè)置3000然后啟動(dòng)jar包就可以了去訪問(wèn)web頁(yè)面了。前言有一點(diǎn)特別重要構(gòu)建鏡像的時(shí)候要看好你的文件是不是這個(gè)目錄要不然打到一半會(huì)報(bào)錯(cuò)說(shuō)找不到文件切記要記得放文件在放文件的目錄執(zhí)行。1、編寫(xiě)Dockerfilespan stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#7f848eem#創(chuàng)建Dockerfile文本/em/span span stylecolor:#61afefvim/spanspan stylecolor:#98c379 Dockerfile/span/code/span/spanspan stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#7f848eem#設(shè)置基礎(chǔ)鏡像/em/span span stylecolor:#61afefFROM/spanspan stylecolor:#98c379 nvidia/cuda:10.1-cudnn7-devel-centos7/span span stylecolor:#7f848eem#維護(hù)者信息/em/span span stylecolor:#61afefMAINTAINER/spanspan stylecolor:#98c379 liucy/span span stylecolor:#61afefMAINTAINER/spanspan stylecolor:#98c379 121212qq.com/span span stylecolor:#61afefMAINTAINER/spanspan stylecolor:#98c379 121212163.com/span span stylecolor:#7f848eem#指定運(yùn)行時(shí)的用戶(hù)以及鏡像的實(shí)際用戶(hù)/em/span span stylecolor:#61afefUSER/spanspan stylecolor:#98c379 root/span span stylecolor:#7f848eem#下載netstat命令/em/span span stylecolor:#61afefRUN/spanspan stylecolor:#98c379 yum/spanspan stylecolor:#d19a66 -y/spanspan stylecolor:#98c379 install/spanspan stylecolor:#98c379 net-tools/span span stylecolor:#7f848eem#設(shè)置jdk1.8的環(huán)境/em/span span stylecolor:#61afefENV/spanspan stylecolor:#98c379 JAVA_HOME/usr/local/jdk1.8.0_333//span span stylecolor:#61afefENV/spanspan stylecolor:#98c379 export/spanspan stylecolor:#98c379 JRE_HOME/spanspan stylecolor:#e06c75$JAVA_HOME/spanspan stylecolor:#98c379/jre/span span stylecolor:#61afefENV/spanspan stylecolor:#98c379 export/spanspan stylecolor:#98c379 CLASSPATH.:/spanspan stylecolor:#e06c75$JAVA_HOME/spanspan stylecolor:#98c379/lib:/spanspan stylecolor:#e06c75$JRE_HOME/spanspan stylecolor:#98c379/lib/span span stylecolor:#61afefENV/spanspan stylecolor:#98c379 PATH/spanspan stylecolor:#e06c75$JAVA_HOME/spanspan stylecolor:#98c379/bin:/spanspan stylecolor:#e06c75$PATH/span span stylecolor:#7f848eem#開(kāi)放一個(gè)3000端口/em/span span stylecolor:#61afefEXPOSE/spanspan stylecolor:#d19a66 3000/span span stylecolor:#7f848eem#移動(dòng)并解壓Grafana.tar安裝包/em/span span stylecolor:#61afefADD/spanspan stylecolor:#98c379 /root/Grafana.tar/spanspan stylecolor:#98c379 /home//span span stylecolor:#7f848eem#復(fù)制當(dāng)前目錄下的所有到/data/cs/里/em/span span stylecolor:#61afefCOPY/spanspan stylecolor:#98c379 .//spanspan stylecolor:#98c379 /data/home//span span stylecolor:#7f848eem#設(shè)置python3.6.8環(huán)境/em/span span stylecolor:#61afefRUN/spanspan stylecolor:#98c379 cd/spanspan stylecolor:#98c379 /data/Python-3.6.8//spanspan stylecolor:#abb2bf /spanspan stylecolor:#61afef./configure/spanspan stylecolor:#d19a66 --prefix/root/python36/spanspan stylecolor:#abb2bf /spanspan stylecolor:#61afefmake/spanspan stylecolor:#abb2bf /spanspan stylecolor:#61afefmake/spanspan stylecolor:#98c379 install/spanspan stylecolor:#abb2bf /spanspan stylecolor:#61afefln/spanspan stylecolor:#d19a66 -s/spanspan stylecolor:#98c379 /root/python36/bin/python3.6/spanspan stylecolor:#98c379 /usr/bin/python3/spanspan stylecolor:#abb2bf /spanspan stylecolor:#61afefln/spanspan stylecolor:#d19a66 -s/spanspan stylecolor:#98c379 /root/python36/bin/pip3/spanspan stylecolor:#98c379 /usr/bin/pip3/span span stylecolor:#7f848eem#切換到/data/目錄/em/span span stylecolor:#61afefWORKDIR/spanspan stylecolor:#98c379 /data//span span stylecolor:#7f848eem#最后執(zhí)行刪除Dockerfile/em/span span stylecolor:#61afefCMD/spanspan stylecolor:#98c379 rm/spanspan stylecolor:#d19a66 -rf/spanspan stylecolor:#98c379 Dockerfile/span/code/span/span2、構(gòu)建鏡像span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#61afefdocker/spanspan stylecolor:#98c379 build/spanspan stylecolor:#d19a66 -t/spanspan stylecolor:#98c379 dockerfile:v1/spanspan stylecolor:#98c379 ./span/code/span/span等待構(gòu)建完成。3、查看鏡像span stylebackground-color:#282c34span stylecolor:#abb2bfcode classlanguage-bashspan stylecolor:#abb2bf[rootcs ~]# docker images/span span stylecolor:#61afefREPOSITORY/spanspan stylecolor:#98c379 TAG/spanspan stylecolor:#98c379 IMAGE/spanspan stylecolor:#98c379 ID/spanspan stylecolor:#98c379 CREATED/spanspan stylecolor:#98c379 SIZE/span span stylecolor:#61afefdockerfile/spanspan stylecolor:#98c379 v1/spanspan stylecolor:#98c379 15c89s63e742/spanspan stylecolor:#d19a66 2/spanspan stylecolor:#98c379 months/spanspan stylecolor:#98c379 ago/spanspan stylecolor:#98c379 8.5GB/span/code/span/span