This challenge provides the basic framework for creating web-challenges that run as a node server.
In addition the the challenge description in problem.json, challenge authors
need to provide the node application and supporting resources with the
challenge directory as the root. In particular package.json and
package-lock.json must both be present because the application is installed
into the container using npm ci --only=production prior to running it.
Additionally, the server entrypoint should use the value of process.env.PORT
for the port to bind on rather than hard-coding a particular port.
There are two values that cmgr will template into every regular file:
{{flag}} and {{seed}}. These values are provided to minimize the need for
boilerplate code that challenge authors need. If there is a need for random
values beyond the flag, challenge authors should ensure they use{{seed}} as
the initial seed for any randomization functions they use in order to ensure
reproducible builds.
If the challenge requires any additional packages, the corresponding apt
packages can be listed with one per line in packages.txt and they will be
installed before the application is launched.