add ONE_SHOT so container exits after run

Dockerfile

@@ -17,6 +17,7 @@ ENV PGID=1000
 ENV TZ=UTC
 ENV GENERATE_DHPARAM=true
 ENV INTERVAL="0 */6 * * *"
+ENV ONE_SHOT=false
 
 # Single domain
 ENV DOMAINS=
@@ -68,6 +69,7 @@ COPY root /
 RUN chmod +x /container-init.sh && \
     chmod +x /certbot-prepare.sh && \
     chmod +x /certbot-renew.sh && \
+    chmod +x /check-one-shot.sh && \
     chown -R ${PUID}:${PGID} /app /config
 
 ENTRYPOINT [ "/init" ]