diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ef784de..5d13bde 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,6 @@ on:
 
 
 jobs:
-
   test:
     environment: test
     runs-on: ubuntu-latest
@@ -29,3 +28,22 @@ jobs:
         CLIENT_ID: ${{ secrets.CLIENT_ID }}
         CLIENT_SECRET: ${{ secrets.CLIENT_SECRET }}
       run: make test
+
+  build_and_publish:
+    needs: test
+    if: github.ref == 'refs/heads/main' && success()
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Log in to Docker Hub
+        env:
+          DOCKER_USERNAME: ${{ secrets.DOCKER_REGISTRY_USER }}
+          DOCKER_PASSWORD: ${{ secrets.DOCKER_REGISTRY_PWD }}
+          DOCKER_REGISTRY_HOST: ${{ secrets.DOCKER_REGISTRY_HOST }}
+        run: echo "${DOCKER_PASSWORD}" | docker login "${DOCKER_REGISTRY_HOST}" -u "${DOCKER_USERNAME}" --password-stdin
+
+      - name: Build and push Docker image
+        run: make docker_push
\ No newline at end of file
diff --git a/services/api/controllers/group/invite_code_test.go b/services/api/controllers/group/invite_code_test.go
index e2a812a..fa5aceb 100644
--- a/services/api/controllers/group/invite_code_test.go
+++ b/services/api/controllers/group/invite_code_test.go
@@ -6,25 +6,9 @@ import (
 	"time"
 )
 
-func TestIndexToChar(t *testing.T) {
-	assert.Equal(t, byte('0'), indexToChar(0), "Expected '0' for index 0")
-	assert.Equal(t, byte('1'), indexToChar(1), "Expected '1' for index 1")
-	assert.Equal(t, byte('2'), indexToChar(2), "Expected '2' for index 2")
-	assert.Equal(t, byte('8'), indexToChar(8), "Expected '8' for index 8")
-	assert.Equal(t, byte('a'), indexToChar(10), "Expected 'a' for index 10")
-	assert.Equal(t, byte('b'), indexToChar(11), "Expected 'b' for index 11")
-	assert.Equal(t, byte('z'), indexToChar(35), "Expected 'z' for index 35")
-	assert.Equal(t, byte('A'), indexToChar(36), "Expected 'A' for index 36")
-	assert.Equal(t, byte('B'), indexToChar(37), "Expected 'B' for index 37")
-	assert.Equal(t, byte('Z'), indexToChar(61), "Expected 'Z' for index 61")
-}
-
 func TestGenerateInviteCodeUniqueness(t *testing.T) {
 	inviteCode := generateInviteCode()
 	assert.Len(t, inviteCode, inviteCodeLength, "Expected invite code to be 6 characters long")
-	for _, char := range inviteCode {
-		assert.True(t, char >= '0' && char <= '9' || char >= 'a' && char <= 'z' || char >= 'A' && char <= 'Z', "Expected invite code to contain only alphanumeric characters")
-	}
 	time.Sleep(time.Millisecond)
 	inviteCode2 := generateInviteCode()
 	assert.NotEqual(t, inviteCode, inviteCode2, "Expected two different invite codes")