feat: improve Dockerfile and remove vuln

[julienlau]

improve Dockerfile in a security perspective:

• remove obsolete openjdk base image
• use node version that do not include critcal vulnerabilities
• specify UID >= 10000
• remove wget and curl (we may skip this step)

• solve an issue due to procps not being installed
• install atop basic monitoring tool

I checked on my environments that the image is functionnal

[julienlau]

Please find a new commit that I tested on my side and is OK.
It takes your review into account

[Minutis]

Looks good.