update deployment info

transformers/drugcentral/README.md

@@ -0,0 +1,50 @@
+## How to deploy DrugCentral transformer
+
+### Package transformer
+
+Package transformer itself
+```
+cd transformers/drugcentral/python-flask-server
+python setup.py bdist_wheel
+```
+Package transformer base class
+```
+cd util/python/
+python setup.py bdist_wheel
+```
+
+### Copy files to server
+
+copy `transformers/drugcentral/python-flask-server/dist/drug_central_transformer-2.3.2-py3-none-any.whl` to the target folder
+
+copy `util/python/transformers-2.0/dist/base_transformer-2.0.0-py3-none-any.whl` to the target folder
+
+copy `transformers/drugcentral/python-flask-server/info` folder to the target folder
+
+copy `util/python/transformers-2.0/config/BiolinkClassMap.txt` to `data` subfolder of the target folder
+
+copy `util/python/transformers-2.0/config/prefixMap.json` to `data` subfolder of the target folder
+
+download DrugCentral.sqlite from `https://translator.broadinstitute.org/db/DrugCentral.sqlite` and save to `data` subfolder of the target folder
+
+
+### Install transformer on server
+
+```
+python3 -m venv venv
+source venv/bin/activate.csh
+pip install -I drug_central_transformer-2.3.2-py3-none-any.whl
+pip install -I base_transformer-2.0.0-py3-none-any.whl
+pip install gunicorn
+pip install "connexion[swagger-ui]"
+deactivate
+```
+
+### Launch transformer
+
+```
+mkdir logs
+source venv/bin/activate.csh
+nohup gunicorn -w 2 -b 0.0.0.0:<port#> openapi_server.__main__:app --timeout 300 >& logs/openapi_server.log &
+deactivate
+```