Cannot install packages inside docker Ubuntu image
It is because there is no package cache in the image, you need to run:
apt-get updatebefore installing packages, and if your command is in a Dockerfile, you'll then need:
apt-get -y install curlTo suppress the standard output from a command use -qq. E.g.
apt-get -qq -y install curl
From the docs in May 2017 2018 2019 2020 2021
Always combine
RUN apt-get updatewithapt-get installin the sameRUNstatement, for example
RUN apt-get update && apt-get install -y package-bar(...)
Using
apt-get updatealone in aRUNstatement causes cachingissues and subsequentapt-get installinstructions fail.(...)
Using
RUN apt-get update && apt-get install -yensures your Dockerfile installs the latest package versions with no further coding or manual intervention. This technique is known as “cache busting”.