Unable to run apt-get within docker build

April 5, 2023

I have an Dockerfile that’s installing ffmpeg and for some reason i get error that says no pub key.

FROM dorowu/ubuntu-desktop-lxde-vnc

WORKDIR /data

RUN apt-get update && apt-get install -y \
    ffmpeg

This is the error I get:

#0 13.99 W: GPG error: http://dl.google.com/linux/chrome/deb stable InRelease: The following signatures couldn’t be verified because the
public key is not available: NO_PUBKEY 4EB27DB2A3B88B8B
#0 13.99 E: The repository ‘http://dl.google.com/linux/chrome/deb stable InRelease’ is not signed.

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I have tried to add this key by running this command with the key I get but nothing is changed and the error remain.

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 4EB27DB2A3B88B8B

OS: Ubuntu 22.04 LTS

Thanks!

>Solution :

You are missing GPG public key for the Google Chrome repository and apt-get cant verify the package.

Lets add it:

FROM dorowu/ubuntu-desktop-lxde-vnc

WORKDIR /data

# Add the missing GPG key
RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 4EB27DB2A3B88B8B

# Install ffmpeg
RUN apt-get update && apt-get install -y \
    ffmpeg