Update Dockerfile

Dockerfile

@@ -1,5 +1,5 @@
-FROM searxng/searxng:latest
-ENV SEARXNG_BASE_URL=https://${SEARXNG_HOSTNAME:-localhost}/
-RUN mkdir /etc/searxng \
-  && chmod 777 /etc/searxng
-COPY ./searxng /etc/searxng
+FROM searxng/searxng:latest
+ENV SEARXNG_BASE_URL=https://${SEARXNG_HOSTNAME:-localhost}/
+RUN mkdir -p /etc/searxng \
+  && chmod 777 /etc/searxng
+COPY ./searxng /etc/searxng