Part 1 : Local container on laptop



This part will show how to use code-server container locally on a laptop.



First, let's get the container with apptainer : 
apptainer pull docker://gitlab-registry.in2p3.fr/cta-lapp/cours/introduction_cpp_algorithms/introduction_cpp_algorithms_alpine_micromamba_code_server:latest
Or with podman : 
podman pull docker://gitlab-registry.in2p3.fr/cta-lapp/cours/introduction_cpp_algorithms/introduction_cpp_algorithms_alpine_micromamba_code_server:latest
Or with docker : 
docker pull gitlab-registry.in2p3.fr/cta-lapp/cours/introduction_cpp_algorithms/introduction_cpp_algorithms_alpine_micromamba_code_server:latest


This will create a introduction_cpp_algorithms_alpine_micromamba_code_server_latest.sif file of 310 MB. It contains :
  • All the lecture dependencies
  • All the lecture examples
  • A readme.md with link to the lecture content
  • A code-server which allows to follow the lecture directly inside a browser
For this demo, we will use apptainer. Since we will compile examples we will bind an extra directory to save performance results. It's possible to add --writable-tmpfs option to tell apptainer the container is writable but it is quite limited by default so we will still have to bind directory.

Let's create a build directory : 
mkdir build


Now, we can start the container with apptainer : 
apptainer run --bind build:/build --writable-tmpfs introduction_cpp_algorithms_alpine_micromamba_code_server_latest.sif micromamba run code-server
Or with podman : 
podman run --net=host --rm -it -p 8080:8080 docker://gitlab-registry.in2p3.fr/cta-lapp/cours/introduction_cpp_algorithms/introduction_cpp_algorithms_alpine_micromamba_code_server:latest
Or with docker : 
docker run --net=host --rm -it -p 8080:8080 gitlab-registry.in2p3.fr/cta-lapp/cours/introduction_cpp_algorithms/introduction_cpp_algorithms_alpine_micromamba_code_server:latest


Then, we can connect to http://127.0.0.1:8080/**.If you connect for the first time, code-server will ask you a password which is writen inside a configuration file in your home. It will tell you where it gets the password from anyway.

You can get the configuration with the following command : 
cat ~/.config/code-server/config.yaml


Now, you can follow the lecture. All the examples are stored in the Examples directory. We can check the SimpleDotProduct :

First, let's go into the /build directory : 
cd /build


Then, we can call cmake : 
cmake /home/jovyan/Examples/SimpleDotProduct


Then, we can compile : 
make


Finally we call the executable : 
./simple_dot_product


If you started the container with the option --writable-tmpfs, you can update the main.cpp, recompile it and see the changes in the result.