i built the docker image for ctf but on running this command

sudo docker run --rm -v $PWD:/pwd --cap-add=SYS_PTRACE --security-opt seccomp=unconfined -d --name ctf -i ctf:ubuntu19.1

i get this error

Unable to find image 'ctf:ubuntu19.1' locally
docker: Error response from daemon: Get https://registry-1.docker.io/v2/library/ctf/manifests/ubuntu19.1: Get https://auth.docker.io/token?scope=repository%3Alibrary%2Fctf%3Apull&service=registry.docker.io: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers).
See 'docker run --help'.

have i done something wrong or is there an issue i with the script.

on manjaro kyria 19.0.1

Hey folks,
during the Docker Build Process, while cloning the pwndbg repository, I get an error and the build fails.

I would prefer, that the Installation of the packages (and the different Git clones) are in a seperate RUN Command than the Git clones, so in the event of an unsuccessful build, the package installation is still cached.

The error is:

Cloning into 'pwndbg'...
/bin/sh: 1: checkout: not found
The command '/bin/sh -c dpkg --add-architecture i386 && apt-get update && apt-get install -y build-essential jq strace ltrace curl wget rubygems gcc dnsutils netcat gcc-multilib net-tools vim gdb gdb-multiarch python python3 python3-pip python3-dev libssl-dev libffi-dev wget git make procps libpcre3-dev libdb-dev libxt-dev libxaw7-dev python-pip libc6:i386 libncurses5:i386 libstdc++6:i386 && pip install capstone requests pwntools r2pipe && pip3 install pwntools keystone-engine unicorn capstone ropper && mkdir tools && cd tools && git clone https://github.com/JonathanSalwan/ROPgadget && git clone https://github.com/radare/radare2 && cd radare2 && sys/install.sh && cd .. && git clone https://github.com/pwndbg/pwndbg && cd pwndbg && checkout stable && ./setup.sh && cd .. && git clone https://github.com/niklasb/libc-database && cd libc-database && ./get && gem install one_gadget' returned a non-zero code: 127

I could build it when I changed checkout stable to git checkout stable

Hi,
I saw your video about your ctf setup and remembered that vscode had a remote feature to connect to the windows subsystem for linux.

turns out you can do the same with docker containers. this should provide vscode with stuff like codecompletion for the installed python packages.
also you'd be able to use the integrated terminal in vscode to run your exploits in the container.

I have not tested this but it should work.
thought I'd share this to see if you're interested.

https://code.visualstudio.com/docs/remote/containers

Issue:

In challenge/Dockerfile, the command RUN apt-get update is useless since the command updates the packages list, but the packages are not upgraded later.

Solution:

Add apt-get upgrade to the RUN layer, or remove the layer.

In the DOCKERFILE, you need to write "FROM ubuntu:latest" else it does not create the docker image stating-->
Step 2/12 : RUN apt-get update
---> Running in ee013a735874
Ign:1 http://archive.ubuntu.com/ubuntu eoan InRelease
Ign:2 http://archive.ubuntu.com/ubuntu eoan-updates InRelease
Ign:3 http://archive.ubuntu.com/ubuntu eoan-backports InRelease
Ign:4 http://security.ubuntu.com/ubuntu eoan-security InRelease
Err:5 http://archive.ubuntu.com/ubuntu eoan Release
404 Not Found [IP: 91.189.88.142 80]
Err:6 http://security.ubuntu.com/ubuntu eoan-security Release
404 Not Found [IP: 91.189.91.38 80]
Err:7 http://archive.ubuntu.com/ubuntu eoan-updates Release
404 Not Found [IP: 91.189.88.142 80]
Err:8 http://archive.ubuntu.com/ubuntu eoan-backports Release
404 Not Found [IP: 91.189.88.142 80]

Docker gives error

E: The repository 'http://security.ubuntu.com/ubuntu eoan-security Release' does not have a Release file.
E: The repository 'http://archive.ubuntu.com/ubuntu eoan Release' does not have a Release file.
E: The repository 'http://archive.ubuntu.com/ubuntu eoan-updates Release' does not have a Release file.
E: The repository 'http://archive.ubuntu.com/ubuntu eoan-backports Release' does not have a Release file.

Change this

to

FROM ubuntu

Thanks