* Read kubernetes version from environment
Set kubernetes version to the value of the environment variable `KUBE_BENCH_VERSION` if it is defined and the flag `--version` is not specified on the kube-bench command line.
The command line flag `--version` takes precedence of the environment variable `KUBE_BENCH_VERSION` if both are defined.
* Add info about KUBE_BENCH_VERSION to README
* Remove duplicate documentation.
* Add test configuration header back in main README.
* Add missing regex operator in docs/README.
* Fix incorrect description of configuration options bins, confs etc.
* Move description of version auto-detection to main README.
* Use 1.13 in examples since cfg/1.12 doesn't exist
* Remove duplicate sentence about regex
This sentence is now in the docs/README
* Add link to the docs for test YAML definitions
Without passing in kubeconfig credentials:
```bash
$ docker run --pid=host -v /etc:/etc:ro -v /var:/var:ro -v $(which kubectl):/usr/bin/kubectl -t lizrice/kube-bench:5e6cdfd master -v 1
I0628 16:52:06.591683 6099 util.go:367] Unable to get Kubernetes version from kubectl, using default version: 1.6
I0628 16:52:06.591822 6099 common.go:74] Using benchmark file: cfg/1.6/master.yaml
...
```
As updated in the README with this fix:
```bash
docker run --pid=host -v /etc:/etc:ro -v /var:/var:ro -v $(which kubectl):/usr/bin/kubectl -v ~/.kube:/.kube -e KUBECONFIG=/.kube/config -t lizrice/kube-bench:5e6cdfd master -v 1
I0628 16:53:26.784122 7224 util.go:131] No test file found for 1.14 - using tests for Kubernetes 1.13
I0628 16:53:26.784961 7224 common.go:228] Using config file: cfg/1.13/config.yaml
...
```
Support new configuration options besides --flags:
- JSON file through `jsonpath`
- YAML file through `yamlpath`
These new options are fully backwards-compatible with the existing
tests.
Added a new profile, 1.11-json, that expects a JSON kubelet
configuration file and scores accordingly. This profile is compatible
with EKS.
The root command will run node checks and if possible master checks.
I've also added some Makefile targets to improve local testing and improve the documentation.
Once the master node recommended check:
1.1.12 Ensure that the admission control plugin DenyEscalatingExec is set
has been followed, it is no longer possible to run kube-bench itself using kubectl.
I don't see how kube-bench can check the permissions on files unless it has access to them on the host, so I think we need to be mounting the /etc directory from the host
