play-with-docker.com session expires and closes after 4 minutes

During this week I am trying every day to test docker image creation using https://labs.play-with-docker.com/. However when I try to create the image, the session expires after 4 minutes. In the meantime, the page claims that the session it will end after 4 hours.

Environment:

Key	Value
Operating system	Windows NT 10.0
Javascript enabled	Yes
Cookies enabled	Yes
Flash version	Not installed
Java version	Not installed
Websockets supported	Yes
Browser size	1252 x 549
Screen size	1280 x 720 (Retina)
Color depth	24 bit
Timezone	Europe/Athens
User Agent	Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0

Steps to reproduce:

Create a new environment, add a new instance and then run:

git clone https://github.com/rsyslog/rsyslog-docker \
&& cp rsyslog-docker/dev_env/common/setup-projects.sh rsyslog-docker/dev_env/ubuntu/base/16.04/ \
&& sed -i 's/--enable-mmgrok//g' rsyslog-docker/dev_env/ubuntu/base/16.04/Dockerfile \
&& sed -i 's/RUN \.\/setup-system.sh/RUN .\/setup-system.sh \&\& .\/setup-projects.sh/g' rsyslog-docker/dev_env/ubuntu/base/16.04/Dockerfile \
&& echo "make install" | tee -a rsyslog-docker/dev_env/ubuntu/base/16.04/setup-projects.sh \
&& cd rsyslog-docker/dev_env/ubuntu/base/16.04 \
&& docker build -t mylocal/rsyslog .

[marcosnils]

Hi, programs like sherlock or any sort of scanner are not allowed. The purpose of the environment is to learn docker and / or try different examples, running these types of programs for your own benefit is not allowed.

[marcosnils]

can you share exactly what you were trying so I can test?