diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index aff461e..b57b257 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -16,4 +16,6 @@
 FROM rust:1-alpine
 
 RUN apk add bash docker git cmake make automake musl-dev \
-        flex bison linux-headers openssl-dev apache2-utils docker-compose
\ No newline at end of file
+        flex bison linux-headers openssl-dev apache2-utils docker-compose && \
+    mkdir /etc/docker && \
+    echo '{ "storage-driver": "vfs" }' > /etc/docker/daemon.json
\ No newline at end of file
diff --git a/examples/bind-shell/key-generator/privkey b/examples/bind-shell/key-generator/privkey
deleted file mode 100644
index 1789ffa..0000000
--- a/examples/bind-shell/key-generator/privkey
+++ /dev/null
@@ -1,2 +0,0 @@
-��c�I
-�7@�����BU ���j�TR]��z"p*o
\ No newline at end of file
diff --git a/examples/bind-shell/key-generator/pubkey b/examples/bind-shell/key-generator/pubkey
deleted file mode 100644
index 983eeb3..0000000
--- a/examples/bind-shell/key-generator/pubkey
+++ /dev/null
@@ -1 +0,0 @@
-ґ:+6�ɲ��{
j��^�ص��	u��hT�q-�
\ No newline at end of file