fix: 🐛 env var is not required and securize submit

frontend/views/Update.vue

@@ -43,7 +43,6 @@
             v-model="environment"
             class="textarea"
             placeholder="DURATION=60s"
-            required
           ></textarea>
         </div>
       </div>
@@ -75,7 +74,7 @@ export default {
     return {
       custom_name: null as string | null,
       image: null as string | null,
-      environment: null as string | null,
+      environment: '',
       error: '',
       loading: false,
     }
@@ -107,6 +106,7 @@ export default {
   },
   methods: {
     async submit() {
+      if (!this.image || !(this.custom_name ?? this.container_name)) return
       try {
         this.loading = true
         const { data } = await axios.post<Container>(