I'm using Docker to deploy my web service to Google Compute Engine and I'm following the instructions given here: https://blog.golang.org/docker
I want to install ffmpeg in the golang container and my approach is to get access to the shell as
docker run -t -i my-webservice /bin/bash
In contrary to the ubuntu:14.04 image, I don't get access to the bash shell. How can that be?
I have also found an image, where the ffmpeg is already configured and installed (https://registry.hub.docker.com/u/cellofellow/ffmpeg/). Is it possible to get access to the container from the golang container or do I have to install ffmpeg into my own docker image?
A better approach would be to install ffmpeg to your golang container by adding a RUN to your Dockerfile, like
RUN apt-get update RUN apt-get install -y ffmpeg
The words modifying, Docker Container, running shell, kind of contradicts the meaning of Docker.
Installing ffmepeg is not as simple if additional codecs need to be installed as well, being the reason that I would like to play around using the shell before writing the docker script (copying the Docker script from cellofellow/ffmpeg works).
An answer to the problems are described here: https://github.com/docker-library/golang/issues/27