diff --git a/Dockerfile b/Dockerfile
index 36b2adac..15439e5a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,12 +14,14 @@ RUN apk --no-cache add -f \
   libidn \
   jq \
   yq-go \
-  cronie
+  supercronic
 
 ENV LE_WORKING_DIR=/acmebin
 
 ENV LE_CONFIG_HOME=/acme.sh
 
+ENV HOME=/acme.sh
+
 ARG AUTO_UPGRADE=1
 
 ENV AUTO_UPGRADE=$AUTO_UPGRADE
@@ -30,10 +32,13 @@ COPY ./deploy /install_acme.sh/deploy
 COPY ./dnsapi /install_acme.sh/dnsapi
 COPY ./notify /install_acme.sh/notify
 
+RUN addgroup -g 1000 acme && adduser -h $LE_CONFIG_HOME -s /bin/sh -G acme -D -H -u 1000 acme
+
 RUN cd /install_acme.sh && ([ -f /install_acme.sh/acme.sh ] && /install_acme.sh/acme.sh --install || curl https://get.acme.sh | sh) && rm -rf /install_acme.sh/
 
+RUN ln -s $LE_WORKING_DIR/acme.sh /usr/local/bin/acme.sh
 
-RUN ln -s $LE_WORKING_DIR/acme.sh /usr/local/bin/acme.sh && crontab -l | grep acme.sh | sed 's#> /dev/null#> /proc/1/fd/1 2>/proc/1/fd/2#' | crontab -
+RUN chown -R acme:acme $LE_CONFIG_HOME
 
 RUN for verb in help \
   version \
@@ -72,7 +77,15 @@ RUN for verb in help \
 
 RUN printf "%b" '#!'"/usr/bin/env sh\n \
 if [ \"\$1\" = \"daemon\" ];  then \n \
- exec crond -n -s -m off \n \
+  if [ ! -f \"\$LE_CONFIG_HOME/crontab\" ]; then \n \
+     echo \"\$LE_CONFIG_HOME/crontab not found, generating one\" \n \
+     time=\$(date -u \"+%s\") \n \
+     random_minute=\$((\$time % 60)) \n \
+     random_hour=\$((\$time / 60 % 24)) \n \
+     echo \"\$random_minute \$random_hour * * * \\\"\$LE_WORKING_DIR\\\"/acme.sh --cron --home \\\"\$LE_WORKING_DIR\\\" --config-home \\\"\$LE_CONFIG_HOME\\\"\" > \"\$LE_CONFIG_HOME\"/crontab \n \
+  fi \n \
+  echo \"Running Supercronic using crontab at \$LE_CONFIG_HOME/crontab\" \n \
+  exec -- /usr/bin/supercronic \"\$LE_CONFIG_HOME/crontab\" \n \
 else \n \
  exec -- \"\$@\"\n \
 fi\n" >/entry.sh && chmod +x /entry.sh && chmod -R o+rwx $LE_WORKING_DIR && chmod -R o+rwx $LE_CONFIG_HOME