Openjdk -> /bin/sh: apt: command not found

Docker Hub
1

Hi there,

on ubuntu 18.04 Im expering the following

FROM openjdk

RUN apt update

/bin/sh: apt: command not found

Any help ?

2

You may be encountering an issue with the minimalist intention that is likely behind the openjdk image, namely, that it’s intended to run Java. From what I can tell from the source repostiory (which is referenced in the readme for the image repo on the hub), the openjdk image is derived from Alpine, and may not have a general purpose shell, nor the apt-related commands.
If you want access to standard tooling, you may want to try the images derived from Oracle Linux, such as 12-jdk-oraclelinux7 , 12-oraclelinux7 , jdk-oraclelinux7 , oraclelinux7 , 12-jdk-oracle , 12-oracle , jdk-oracle
like so
$ docker run -it openjdk:12-jdk-oraclelinux7 sh
though the packaging tools there is yum
Alternately, you could also build your own image with the openjdk toolset using the Dockerfiles from their GitHub repo as guidelines.

3

Thanks. The oraclejdk:TAG and replacing the apt with yum solved the problem. Eventually, I needed the sh at the end of the docker run.