Add README.

Author: gustavosr8

README.md

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+# EPICS SoftIOC to auto adjust the cryo load.
+
+
+This repository contains the EPICS Soft Input/Output Controller (IOC) used at
+LNLS for leveling the cryomodule load till reach a desired total power value.
+
+## Running the IOC
+
+You can use the following command to run it in the background using the default
+start-up script from
+[epics-in-docker](https://github.com/cnpem/epics-in-docker).
+
+```bash
+TAG={latest} docker compose up -d
+```
+
+## Building the IOC image
+
+This project uses [epics-in-docker](https://github.com/cnpem/epics-in-docker)
+for building container images.