Tuesday 4 June 2019

Docker: Run new container


Syntax
docker run imageName:tagName

Whenever you ran above command, docker starts new container with given image.

For example, Start new container with jboss/wildfly image by executing below command.
docker run -d -p1234:8080 jboss/wildfly

$docker run -d -p1234:8080 jboss/wildfly
Unable to find image 'jboss/wildfly:latest' locally
latest: Pulling from jboss/wildfly
a02a4930cb5d: Pull complete 
b5ffff9dbcda: Pull complete 
36845d6d0218: Pull complete 
08619c8c88e2: Pull complete 
6292a0d81fc0: Pull complete 
Digest: sha256:d538754ee178cd3f8e954d9e093e81ce5b0dfa0ef56919fcab50c1f932ee594e
Status: Downloaded newer image for jboss/wildfly:latest
94c40efb9fcb969f819cb86cd58356f1658717e5e61f1009f918c5e8b8e4bee2
$
$
$docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES
94c40efb9fcb        jboss/wildfly       "/opt/jboss/wildfly/…"   12 seconds ago      Up 11 seconds       0.0.0.0:1234->8080/tcp   upbeat_mendeleev

Lets start another container with the same image by running below command.

docker run -d -P jboss/wildfly

$docker run -d -P jboss/wildfly
3c7b2ff5c0c8274312f2eb18095e6f3c668084e11848a88f41661db94d65d4a0
$
$docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED              STATUS              PORTS                     NAMES
3c7b2ff5c0c8        jboss/wildfly       "/opt/jboss/wildfly/…"   3 seconds ago        Up 3 seconds        0.0.0.0:32769->8080/tcp   thirsty_matsumoto
94c40efb9fcb        jboss/wildfly       "/opt/jboss/wildfly/…"   About a minute ago   Up About a minute   0.0.0.0:1234->8080/tcp    upbeat_mendeleev


As you see the output of ‘docker ps’ command, it shows that there are two containers running.

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