diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 6c3670c..ee1b772 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -3,7 +3,7 @@ name: Build Docker Image
 
 on:
   push:
-    branches: [ main, dev ]
+    branches: [ main ]
   workflow_dispatch:
 
 jobs:
@@ -14,6 +14,9 @@ jobs:
       - name: Copy Repo Files
         uses: actions/checkout@v2
 
+      - id: sha
+        run: echo "::set-output name=sha::$(git describe --always --tags --dirty)"
+
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v1
 
@@ -32,6 +35,6 @@ jobs:
         with:
           context: .
           file: ./Dockerfile
-          platforms: linux/amd64
+          platforms: linux/arm64, linux/arm, linux/amd64
           push: true
-          tags: flotte-docker-registry.spdns.org/apollo-server:latest
+          tags: flotte-docker-registry.spdns.org/apollo-server:latest, flotte-docker-registry.spdns.org/apollo-server:${{ steps.sha.outputs.sha }}
diff --git a/.github/workflows/node.js.yml b/.github/workflows/node.js.yml
index 8cf4409..31de5ba 100644
--- a/.github/workflows/node.js.yml
+++ b/.github/workflows/node.js.yml
@@ -3,11 +3,7 @@
 
 name: Node.js CI
 
-on:
-  push:
-    branches: [ main ]
-  pull_request:
-    branches: [ main ]
+on: [push, pull_request]
 
 jobs:
   build:
diff --git a/src/datasources/db/participantAPI.ts b/src/datasources/db/participantAPI.ts
index bd16bcf..08b3862 100644
--- a/src/datasources/db/participantAPI.ts
+++ b/src/datasources/db/participantAPI.ts
@@ -315,7 +315,7 @@ export class ParticipantAPI extends DataSource {
                     throw new UserInputError('Participant ist not active in the specified dateRange');
                 }
             } else if (engagement.dateRange || engagement.dateRange) {
-                throw new UserInputError('Please specify participantId adn the dateRange');
+                throw new UserInputError('Please specify participantId and the dateRange');
             }
             await entityManager.getRepository(Engagement)
                 .createQueryBuilder('engagement')