$ oc new-project test

apiVersion: v1
kind: DeploymentConfig
metadata:
  name: mysql
spec:
  replicas: 1
  selector:
    app: mysql
  template:
    metadata:
      name: mysql
      labels:
        app: mysql
    spec:
      containers:
      - name: mysql
        image: registry.example.com/rhscl/mysql-57-rhel7:latest
        env:
          - name: MYSQL_ROOT_PASSWORD
            value: redhat
          - name: MYSQL_USER
            value: test_user
          - name: MYSQL_PASSWORD
            value: test_pass
          - name: MYSQL_DATABASE
            value: test_db
        ports:
          - containerPort: 3306
            name: mysql
strategy:
  type: Rolling

$ oc create -f dc.yaml
deploymentconfig "mysql" created

$ oc get all
NAME                      REVISION   DESIRED   CURRENT   TRIGGERED BY
deploymentconfigs/mysql   1          1         1         config

NAME               READY     STATUS    RESTARTS   AGE
po/mysql-1-kzpbp   1/1       Running   0          52s

NAME         DESIRED   CURRENT   READY     AGE
rc/mysql-1   1         1         1         54s

$ oc port-forward mysql-1-kzpbp 13306:3306
Forwarding from 127.0.0.1:13306 -> 3306

$ mysql -h127.0.0.1 -utest_user -ptest_pass -P13306 test_db
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.21 MySQL Community Server (GPL)

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MySQL [test_db]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| test_db            |
+--------------------+
2 rows in set (0.04 sec)

$ oc new-project test