docker: multi-stage builds (intermediate) anthony explains  

Great explanation, thank you

Thanks for sharing

For me caching in multistage build works. As I have notices, you will have rebuilds of first stage where you have changes: e.g. if you cp reqeuests.txt that is different from what was before, all later layers will be rebuild, otherwise docker will check later commands to find changes if any. So, if you want to optimize build time, put things that will change frequenty to the end to cache more layers.

I mostly use multistage builds for the security aspects. Most of my build require that I provide credentials to access external resources. In these situations you don't want your credentials in the final image. Newer versions of docker have ways of passing in secrets. But our IT department refuses to update the version we use so multi state build it is

thank you :)

Your views are critically low for as good a channel you are! Thanks!

Any logical use case of using multi-stage for Python apps ? I mean for languages like Go, C, Rust etc where you have build artifacts as a binary output it makes absolute sense to reduce image size

Please explain Nix vs Docker, in terms of convenience for a long-term project which you want to always work, even if you build it 5-10 years later.

Dockerfile: FROM ubuntu:jammy RUN : \ && apt-get update \ && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommend gcc \ libc6-dev \ && apt-get clean \ && rm -rf /var/lib/apt/lists/* COPY main.c . RUN gcc -o /usr/local/bin/hello-hello-world main.c Hi when I try to build image i recieve next error: ERROR: failed to solve: dockerfile parse error on line 6: unknown instruction: gcc Can you explain please what I am doing wrong ? And if it not secret what keyboard model do you use ?