+>Start the image on both http and https<br>
+```docker run -it -p 8090:8090 -p 8091:8091 callback-receiver```
+
+It will listen to http 8090 port and https 8091 port(using default certificates) at the same time.
+
+By default, this image has default certificates under /usr/src/app/cert
+file "cert.crt" is the certificate file
+file "key.crt" is the key file
+file "generate_cert_and_key.sh" is a shell script to generate certificate and key
+file "pass" stores the password when you run the shell script
+
+This certificates/key can be overriden by mounting a volume when using "docker run" or "docker-compose"
+In 'docker run', use field:
+--volume "$PWD/certificate:/usr/src/app/cert" a1test
+```docker run -it -p 8090:8090 -p 8091:8091 -v "/PATH_TO_CERT/cert:/usr/src/app/cert" callback-receiver```
+In 'docker-compose.yml', use field:
+volumes:
+ - ./certificate:/usr/src/app/cert:ro