Update postfix.md

Author: gulien

docs/postfix.md

@@ -9,7 +9,7 @@ First, update your `.env.template` file by adding:
 ```
 # postfix
 POSTFIX_SERVICE_NAME=postfix
-POSTFIX_CONTAINER=${PROJECT_NAME}_${POSTFIX_SERVICE_NAME}_${ENV}
+POSTFIX_CONTAINER_NAME=${PROJECT_NAME}_${POSTFIX_SERVICE_NAME}_${ENV}
 MAIL_DOMAIN=${APACHE_VIRTUAL_HOST}
 [email protected]
 SMTP_PASSWORD=admin
@@ -21,7 +21,7 @@ Then, update your `docker-compose.yml.template` file with the following:
 ${POSTFIX_SERVICE_NAME}:
   image: catatnight/postfix:latest
   restart: unless-stopped
-  container_name: ${POSTFIX_CONTAINER}
+  container_name: ${POSTFIX_CONTAINER_NAME}
   ports:
     - 25:25
   environment:
@@ -36,7 +36,7 @@ Add the following lines in the `prepare()` method of the `_prepare` script (in `
 ```
 # postfix
 sedi "s/\${POSTFIX_SERVICE_NAME}/${POSTFIX_SERVICE_NAME}/g" ${ROOT}/docker-compose.yml;
-sedi "s/\${POSTFIX_CONTAINER}/${POSTFIX_CONTAINER}/g" ${ROOT}/docker-compose.yml;
+sedi "s/\${POSTFIX_CONTAINER_NAME}/${POSTFIX_CONTAINER_NAME}/g" ${ROOT}/docker-compose.yml;
 sedi "s/\${MAIL_DOMAIN}/${MAIL_DOMAIN}/g" ${ROOT}/docker-compose.yml;
 sedi "s/\${NO_REPLY_EMAIL}/${NO_REPLY_EMAIL}/g" ${ROOT}/docker-compose.yml;
 sedi "s/\${SMTP_PASSWORD}/${SMTP_PASSWORD}/g" ${ROOT}/docker-compose.yml;