move Docker-files in ./dockerfile dir

dockerfiles/Dockerfile_Ngx_Template

@@ -0,0 +1,7 @@
+FROM nginx:latest
+
+COPY ./scripts/knocking_setup.sh /root/scripts/knocking_setup.sh
+
+RUN apt update \
+      && apt install knockd htop iptables iproute2 vim curl -y
+