vim Dockerfile

FROM alpine:latest
MAINTAINER brady
CMD echo "hello world"

 进行构建

docker build -t hello_docker .

 

[root@localhost dnmp_test]# ls
[root@localhost dnmp_test]# vim Dockerfile
[root@localhost dnmp_test]# docker build -t hello_docker .
Sending build context to Docker daemon 2.048 kB
Step 1/3 : FROM alpine:latest
Trying to pull repository docker.io/library/alpine ...
latest: Pulling from docker.io/library/alpine
9d48c3bd43c5: Pull complete
Digest: sha256:72c42ed48c3a2db31b7dafe17d275b634664a708d901ec9fd57b1529280f01fb
Status: Downloaded newer image for docker.io/alpine:latest
 ---> 961769676411
Step 2/3 : MAINTAINER brady

▽
 ---> Running in f1802f56a693
 ---> 00cdf7104f8b
Removing intermediate container f1802f56a693
Step 3/3 : CMD echo "hello world"
 ---> Running in e7b7a18d8c32
 ---> baa4664fe58d
Removing intermediate container e7b7a18d8c32
Successfully built baa4664fe58d
[root@localhost dnmp_test]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
hello_docker        latest              baa4664fe58d        6 seconds ago       5.58 MB
nginx-fun           latest              6ea0e8bb024d        7 minutes ago       126 MB
docker.io/nginx     latest              ab56bba91343        8 days ago          126 MB
docker.io/alpine    latest              961769676411        4 weeks ago         5.58 MB
[root@localhost dnmp_test]# docker run hello_docker
hello world