diff --git a/app/mobile/src/access/create/useCreate.hook.js b/app/mobile/src/access/create/useCreate.hook.js
index 7a78ae73..07108a65 100644
--- a/app/mobile/src/access/create/useCreate.hook.js
+++ b/app/mobile/src/access/create/useCreate.hook.js
@@ -72,6 +72,13 @@ export function useCreate() {
     if (debounce.current) {
       clearTimeout(debounce.current);
     }
+
+    const restricted = new RegExp('[!@#$%^&*()\ ,.?":{}|<>]', 'i');
+    if (restricted.test(state.username)) {
+      updateState({ usernameValid: false });
+      return;
+    }
+
     debounce.current = setTimeout(async () => {
       checking.current = true;
       debounce.current = null;
diff --git a/net/container/Dockerfile b/net/container/Dockerfile
index 8b84d981..6c5ee5e7 100644
--- a/net/container/Dockerfile
+++ b/net/container/Dockerfile
@@ -36,7 +36,7 @@ RUN if [ "$TARGETPLATFORM" = "linux/amd64" ]; then ARCHITECTURE=amd64; elif [ "$
     && wget -P /app https://go.dev/dl/go1.17.5.linux-${ARCHITECTURE}.tar.gz \
     && tar -C /usr/local -xzf /app/go1.17.5.linux-${ARCHITECTURE}.tar.gz 
 
-RUN git               clone                           https://github.com/balzack/databag.git    /app/databag
+RUN git             clone       https://github.com/balzack/databag.git     /app/databag
 
 RUN yarn config set network-timeout 300000
 RUN yarn --cwd /app/databag/net/web install