Docker - Ubuntu - bash ping command not found

Question

I ve got a Docker container running Ubuntu which I did as follows   docker run -it ubuntu  bin bash   however it doesn t seem to have ping  E g   bash  ping  command not found   Do I need to install that   Seems a pretty basic command to be missing  I tried whereis ping which doesn t report anything

User · Accepted Answer

Docker images are pretty minimal  But you can install ping in your official ubuntu docker image via   apt-get update apt-get install iputils-ping   Chances are you dont need ping your image  and just want to use it for testing purposes  Above example will help you out   But if you need ping to exist on your image  you can create a Dockerfile or commit the container you ran the above commands in to a new image   Commit   docker commit -m  Installed iputils-ping  --author  Your Name  lt name domain com gt   ContainerNameOrId yourrepository imagename tag   Dockerfile   FROM ubuntu RUN apt-get update  amp  amp  apt-get install -y iputils-ping CMD bash   Please note there are best practices on creating docker images  Like clearing apt cache files after and etc

User · Answer

Generally people pull the official image of Ubuntu CentOS but they don t realize that these images are minimal and doesn t have any thing on the top of that   For Ubuntu  this image is built from official rootfs tarballs provided by Canonical  Given that it is a minimal install of Ubuntu  this image only includes the C  C UTF-8  and POSIX locales by default   One can install net-tools  includes ifconfig  netstat   ip-utils includes ping  andy other likes curl etc on container and can create image from container or can write Dockerfile that will install these tool while creating image   Below is Dockerfile example  while creating image from this it will include these tools   FROM vkitpro ubuntu16 04 RUN     apt-get  update -y    amp  amp  apt-get upgrade -y    amp  amp  apt-get install iputils-ping -y    amp  amp  apt-get install net-tools -y   CMD bash   or launch container from base image and install these utilities on container and then commit to image  docker commit -m  any descriptive message  container id image name lattest  That image will have all thing installed

User · Answer

Every time you get this kind of error  bash   lt command gt   command not found    On a host with that command already working with this solution   dpkg -S   which  lt command gt    Don t have a host with that package installed  Try this   apt-file search  bin  lt command gt

User · Answer

Alternatively you can use a Docker image which already has ping installed  e g  busybox   docker run --rm busybox ping SERVER NAME -c 2

User · Answer

Sometimes  the minimal installation of Linux in Docker doesn t define the path and therefore it is necessary to call ping using       cd  usr sbin ping  lt ip gt

User · Answer

I have used the statement below on debian 10  apt-get install iputils-ping

User · Answer

This is the Docker Hub page for Ubuntu and this is how it is created  It only has  somewhat  bare minimum packages installed  thus if you need anything extra you need to install it yourself   apt-get update  amp  amp  apt-get install -y iputils-ping   However usually you d create a  Dockerfile  and build it   mkdir ubuntu with ping cat  gt ubuntu with ping Dockerfile  lt  lt  EOF  FROM ubuntu RUN apt-get update  amp  amp  apt-get install -y iputils-ping CMD bash EOF docker build -t ubuntu with ping ubuntu with ping docker run -it ubuntu with ping   Please use Google to find tutorials and browse existing Dockerfiles to see how they usually do things    For example image size should be minimized by running apt-get clean  amp  amp  rm -rf  var lib apt lists   after apt-get install commands

[ubuntu] Docker - Ubuntu - bash: ping: command not found

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