CMD & ENTRYPOINT

ENTRYPOINT使用

FROM centos RUM yum install -y curl #ENTRYPOINT ["curl","-s","http://ip.cn"] ENTRYPOINT ["curl","-s","http://www.baidu.com"] docker build -f /workspace/docker/Dockerfile_curl -t myip:1.0 . Sending build context to Docker daemon 3.072kB Step 1/3 : FROM centos---> 831691599b88 Step 2/3 : RUN yum install -y curl---> Running in 9878b97ea6fd CentOS-8 - AppStream 3.5 MB/s | 5.8 MB 00:01 CentOS-8 - Base 2.2 MB/s | 2.2 MB 00:00 CentOS-8 - Extras 1.2 kB/s | 7.0 kB 00:05 Package curl-7.61.1-12.el8.x86_64 is already installed. Dependencies resolved. Nothing to do. Complete! Removing intermediate container 9878b97ea6fd---> ac1f2fc0a188 Step 3/3 : CMD ["curl","-s","http://ip.cn"]---> Running in 0d77293c2afc Removing intermediate container 0d77293c2afc---> 7b755e63d671 Successfully built 7b755e63d671 Successfully tagged myip:1.0 docker images REPOSITORY TAG IMAGE ID CREATED SIZE myip 1.0 7b755e63d671 About a minute ago 235MB #-i會與curl -s進行拼接 docker run myip:1.1 -i HTTP/1.1 200 OK Accept-Ranges: bytes Cache-Control: private, no-cache, no-store, proxy-revalidate, no-transform Connection: keep-alive Content-Length: 2381 Content-Type: text/html Date: Sat, 01 Aug 2020 06:41:20 GMT Etag: "588604cf-94d" Last-Modified: Mon, 23 Jan 2017 13:27:43 GMT Pragma: no-cache Server: bfe/1.0.8.18 Set-Cookie: BDORZ=27315; max-age=86400; domain=.baidu.com; path=/

總結

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