Error when installing packages

I got error executing this command:
docker build buildenv -t myos-buildenv
Log:
Sending build context to Docker daemon 2.048kB
Step 1/9 : FROM randomdude/gcc-cross-x86_64-elf
latest: Pulling from randomdude/gcc-cross-x86_64-elf
e79bb959ec00: Pull complete
f050fc6c689b: Downloading [=================================================> ] 118.9MB/119.9MB
442cb3d16d02: Downloading [===================> ] 57.3
f050fc6c689b: Pull complete
442cb3d16d02: Pull complete
14d94ff98d19: Pull complete
a4ae10eb5f5e: Pull complete
e902f4d76ec4: Pull complete
5db60b077f02: Pull complete Digest: sha256:2ca589df09c1161268b48022be127e72477b0b501cd605b5af2bce7a159a853a
Status: Downloaded newer image for randomdude/gcc-cross-x86_64-elf:latest
---> c7e17c42eb04
Step 2/9 : RUN apt-get update
---> Running in c30f4675962f
Ign:1 http://security.debian.org/debian-security stretch/updates InRelease
Err:2 http://security.debian.org/debian-security stretch/updates Release
404 Not Found
Ign:3 http://deb.debian.org/debian stretch InRelease
Ign:4 http://deb.debian.org/debian stretch-updates InRelease
Err:5 http://deb.debian.org/debian stretch Release
404 Not Found
Err:6 http://deb.debian.org/debian stretch-updates Release
404 Not Found
Reading package lists...
E: The repository 'http://security.debian.org/debian-security stretch/updates Release' does no longer have a Release file.
E: The repository 'http://deb.debian.org/debian stretch Release' does no longer have a Release file.
E: The repository 'http://deb.debian.org/debian stretch-updates Release' does no longer have a Release file.
The command '/bin/sh -c apt-get update' returned a non-zero code: 100

[jonasinus]

I have the same issue. when I try to run a newer version of debian (i.e. debian:bullseye), everything works fine. so I guess it has something to do with the update-servers? but idk

[Kjur0]

It isn't strictly this respository issue, but more like no longer supported distro issue. Basically you have 2 options:
-switch to newer linux, possibly create your own docker image with it
-find some good archives with everything you need

[Sudeep-Sharma0-0]

# Use Debian Buster as the base image
FROM debian:buster

# Update and install essential packages
RUN apt-get update \
    && apt-get upgrade -y \
    && apt-get install -y xorriso grub-common grub-pc-bin nasm \
    && apt-get install -y build-essential gcc-multilib gcc-mingw-w64

# Create a volume and set the working directory
VOLUME /root/env
WORKDIR /root/env

# Copy the contents of the current directory to the container's working directory
COPY ./ /root/env/

Use this docker file. Then after you log on to the shell of docker container download Toolchain
then extract the tar.xz to /opt/ in the container.
Then add export PATH=/opt/x86_64-elf-7.5.0-Linux-x86_64/bin:$PATH to .bashrc in the docker container.
And finally source .bashrc