First working version

README.md

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+# concron
+
+**Con**tainerized **cron**. Golang native scheduler to run repeated command inside containers (Docker, k8s)
+
+## command-line
+
+examples:
+```
+# run with config file 'tasks.yaml' located in current directory
+concron -c tasks.yaml
+# show options
+concron -h
+```
+
+arguments:
+```
+-c <config file> : config file, YAML format
+-h               : show help
+-p <http port>   : http port for http server (default: 8080)
+-debug           : show debug logs
+```
+
+## http server endpoint
+
+- `/healthz` - health endpoint, returns code `200` with text `OK`. Useful for kubernetes pods ready/live probes.
+
+## config format
+
+example:
+
+see [tasks.yaml](tasks.yaml)
+
+description:
+
+_in work..._