Added bug reporting template

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,25 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Reporting a bug**
+
+First of all, this is **not** a problem reporting forum, only report if you are pretty sure what you are experiencing is a bug with this image, not a configuration issue, for that you can use the [Github discussions section](https://github.com/juanluisbaptiste/docker-postfix/discussions) and we will do our best to help you to figure out what's going on with your setup.
+
+Also be sure you are using the latest image by doing _docker pull juanluisbaptiste/postfix:latest_.
+
+**Please include the contents of:**
+
+  * Your docker-compose.yml file
+  * Your .env file file
+
+**Describe the issue**
+Please include a description of what you are trying to accomplish and what you are facing when running this container.
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.