optimise images for smaller size

backend/app/store/image/fs_store_test.go

@@ -75,7 +75,7 @@ func TestFsStore_SaveNoResizeJpeg(t *testing.T) {
 	t.Log(imgPath)
 	data, err := os.ReadFile(imgPath)
 	assert.NoError(t, err)
-	assert.Equal(t, 23983, len(data))
+	assert.Equal(t, 16756, len(data))
 }
 
 func TestFsStore_SaveAndCommit(t *testing.T) {

backend/app/store/image/image_test.go

@@ -48,7 +48,7 @@ func TestService_ResizeJpeg(t *testing.T) {
 
 	img, err := readAndValidateImage(fh, 32000)
 	assert.NoError(t, err)
-	assert.Equal(t, 23983, len(img))
+	assert.Equal(t, 16756, len(img))
 
 	img = resize(img, 400, 300)
 	assert.Equal(t, 10918, len(img))