How to customize NGINX configuration to modify the "client_max_body_size" in Elastic Beanstalk

I'm following the recommended steps:

• Create the client_max_body_size.conf file with the desired configuration;
• Allocate the file under the structure:

--- .platform
       -- nginx
           -- conf.d
                 -- client_max_body_size.conf

The file client_max_body_size.conf has a path like this: my-app/.platform/nginx/conf.d/client_max_body_size.conf.

• Including the reference in the POM.xml file:

 <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-antrun-plugin</artifactId>
        <version>1.8</version>
        <executions>
          <execution>
            <id>prepare</id>
            <phase>package</phase>
            <configuration>
              <tasks>
                <copy todir="${project.build.directory}/${project.build.finalName}/"
                  overwrite="false">
                  <fileset dir="./" includes=".platform/**"/>
                  <fileset dir="${project.build.directory}" includes="*.jar"/>
                </copy>
                <zip destfile="${project.build.directory}/${project.build.finalName}.zip"
                  basedir="${project.build.directory}/${project.build.finalName}"/>
              </tasks>
            </configuration>
            <goals>
              <goal>run</goal>
            </goals>
          </execution>
        </executions>
      </plugin>

But then checking nothing changed:

[ec2-user@ip-XXXXXXX /]$ sudo nginx -T | egrep -i "client_max_body_size"
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful