diff --git a/Dockerfile b/Dockerfile
index df9d72b..974c3fe 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM cloudron/base:3.0.0@sha256:455c70428723e3a823198c57472785437eb6eab082e79b3ff04ea584faf46e92
+FROM cloudron/base:3.2.0@sha256:ba1d566164a67c266782545ea9809dc611c4152e27686fd14060332dd88263ea
 
 RUN mkdir -p /app/code /app/pkg
 WORKDIR /app/code
@@ -38,12 +38,12 @@ RUN ln -fs /run/mastodon/bullet.log /app/code/log/bullet.log && \
 RUN rm /etc/nginx/sites-enabled/* && \
     ln -sf /dev/stdout /var/log/nginx/access.log && \
     ln -sf /dev/stderr /var/log/nginx/error.log
-ADD nginx_readonlyrootfs.conf /etc/nginx/conf.d/readonlyrootfs.conf
+COPY nginx_readonlyrootfs.conf /etc/nginx/conf.d/readonlyrootfs.conf
 COPY nginx/mastodon.conf /etc/nginx/sites-available/mastodon
 RUN ln -s /etc/nginx/sites-available/mastodon /etc/nginx/sites-enabled/mastodon
 
 # add supervisor configs
-ADD supervisor/* /etc/supervisor/conf.d/
+COPY supervisor/* /etc/supervisor/conf.d/
 RUN ln -sf /run/mastodon/supervisord.log /var/log/supervisor/supervisord.log
 
 RUN ln -fs /app/data/env.production /app/code/.env.production