I have a Docker image that uses ubuntu:21.04. When I SSH onto it I try to install git using the official Git Ubuntu installation instructions but I get an error:
root@c812b171354a:/home/ubuntu# sudo apt install git-all
bash: sudo: command not found
I'm surprised to see sudo doesn't exist! So I try it without sudo:
root@c812b171354a:/home/ubuntu# apt install git-all
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package git-all
So I ask: what command(s) can I run to install git on a Dockerized Ubuntu 21.04 container?
Here is my full Dockerfile:
FROM ubuntu:21.04
COPY keep-alive.sh /home/ubuntu/keep-alive.sh
# give keep-alive script permission to run
RUN ["chmod", "+x", "/home/ubuntu/keep-alive.sh"]
# install git
RUN apt update -y
RUN apt install -y gpgv2 git-all
CMD ["/bin/bash", "-c", "/home/ubuntu/keep-alive.sh"]
When I build the image:
docker build -t myorg/linux-worker .
I get:
Sending build context to Docker daemon 7.68kB
Step 1/6 : FROM ubuntu:21.04
---> 478aa0080b60
Step 2/6 : COPY keep-alive.sh /home/ubuntu/keep-alive.sh
---> Using cache
---> e1bcc0d7dd20
Step 3/6 : RUN ["chmod", "+x", "/home/ubuntu/keep-alive.sh"]
---> Using cache
---> ef46c36ec41b
Step 4/6 : RUN apt update -y
---> Running in fee517c02852
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
Get:1 http://security.ubuntu.com/ubuntu hirsute-security InRelease [101 kB]
Err:1 http://security.ubuntu.com/ubuntu hirsute-security InRelease
gpgv, gpgv2 or gpgv1 required for verification, but neither seems installed
Get:2 http://archive.ubuntu.com/ubuntu hirsute InRelease [269 kB]
Err:2 http://archive.ubuntu.com/ubuntu hirsute InRelease
gpgv, gpgv2 or gpgv1 required for verification, but neither seems installed
Get:3 http://archive.ubuntu.com/ubuntu hirsute-updates InRelease [109 kB]
Err:3 http://archive.ubuntu.com/ubuntu hirsute-updates InRelease
gpgv, gpgv2 or gpgv1 required for verification, but neither seems installed
Get:4 http://archive.ubuntu.com/ubuntu hirsute-backports InRelease [90.7 kB]
Err:4 http://archive.ubuntu.com/ubuntu hirsute-backports InRelease
gpgv, gpgv2 or gpgv1 required for verification, but neither seems installed
Reading package lists...
W: GPG error: http://security.ubuntu.com/ubuntu hirsute-security InRelease: gpgv, gpgv2 or gpgv1 required for verification, but neither seems installed
E: The repository 'http://security.ubuntu.com/ubuntu hirsute-security InRelease' is not signed.
W: GPG error: http://archive.ubuntu.com/ubuntu hirsute InRelease: gpgv, gpgv2 or gpgv1 required for verification, but neither seems installed
E: The repository 'http://archive.ubuntu.com/ubuntu hirsute InRelease' is not signed.
W: GPG error: http://archive.ubuntu.com/ubuntu hirsute-updates InRelease: gpgv, gpgv2 or gpgv1 required for verification, but neither seems installed
E: The repository 'http://archive.ubuntu.com/ubuntu hirsute-updates InRelease' is not signed.
W: GPG error: http://archive.ubuntu.com/ubuntu hirsute-backports InRelease: gpgv, gpgv2 or gpgv1 required for verification, but neither seems installed
E: The repository 'http://archive.ubuntu.com/ubuntu hirsute-backports InRelease' is not signed.
The command '/bin/sh -c apt update -y' returned a non-zero code: 100
Are there any other dependencies I need?
The Ubuntu image comes with nothing in the package listings, so you need to apt update then apt install git-all.
Add the -y options to those if you put them in RUN commands in the Dockerfile.