add missing entity file, fix run cert script for mac

Author: vyue013

README.md

@@ -140,7 +140,7 @@ npm install -g mkcert
 2. Run the following script
 
 ```bash
-npm run cert
+npm run cert:mac
 ```
 
 ### Linux

server/entities/user.entity.ts

@@ -0,0 +1,40 @@
+import {
+  Entity,
+  PrimaryColumn,
+  Column,
+  BaseEntity,
+  PrimaryGeneratedColumn,
+} from 'typeorm';
+
+@Entity()
+export class User extends BaseEntity {
+  @PrimaryColumn()
+  id!: number;
+
+  @Column()
+  full_name!: string;
+
+  @Column()
+  sub!: string;
+
+  @Column()
+  email!: string;
+
+  @Column()
+  picture!: string;
+
+  @Column()
+  pg_schema!: string;
+
+  @Column()
+  password!: string;
+}
+
+@Entity()
+export class UserPost extends BaseEntity {
+  @PrimaryGeneratedColumn()
+  id!: number;
+
+  @Column()
+  user_name!: string;
+}