install locales inside a docker image

Dockerfile

FROM debian

RUN apt-get update && \
    apt-get install -y \
        locales && \
    rm -r /var/lib/apt/lists/*

RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
    sed -i -e 's/# de_DE.UTF-8 UTF-8/de_DE.UTF-8 UTF-8/' /etc/locale.gen && \
    dpkg-reconfigure --frontend=noninteractive locales

And how do I do that on an almalinux10-minimal image?

If you ask AI, this is the output:

# Use AlmaLinux 10 minimal as the base image
FROM almalinux:10-minimal

# Install the desired language pack
# 'dnf' is available in the minimal image to manage packages
RUN dnf install -y glibc-langpack-en && \
    dnf clean all

# Set environment variables to define the locale
ENV LANG=en_US.UTF-8
ENV LANGUAGE=en_US:en
ENV LC_ALL=en_US.UTF-8

# (Optional) Verify the locale setting
RUN locale

I do not use almalinux, please research on your own.