Update achievements dortmund hackergarten event of April 2025

Author: CapnDeCode

events.json

@@ -205,7 +205,16 @@
                 "url": "https://www.meetup.com/hackergarten-dortmund/events/306416425"
             }
         ],
-        "achievements": []
+        "achievements": [
+            {
+                "title": "mqtt-postgres-scrapper: Create Github Repository and publish.",
+                "url": "https://github.com/CapnDeCode/mqtt-postgres-scrapper"
+            },
+            {
+                "title": "mqtt-postgres-scrapper: Publish docker image",
+                "url": "https://hub.docker.com/r/timotheeclolus/mqtt-postgres-scrapper"
+            }
+        ]
     },
     {
         "date": "2025-04-01",
@@ -232,7 +241,7 @@
         ],
         "achievements": [
         ]
-    },    
+    },
     {
          "date": "2025-03-20",
          "title": "Hackergarten Basel March 2025",