Try to make docker imager a bit smaller by removing unnecessary packages (#236)

install.sh

@@ -37,7 +37,7 @@ ariang_file=AriaNg-${ariang_version}.zip
 groupadd junv \
   && useradd -g junv -m -s /bin/bash junv \
   && apt update \
-  && apt install -y runit wget curl openrc gnupg aria2 tar mailcap fuse vim unzip libcap2-bin\
+  && apt install -y wget curl aria2 tar unzip libcap2-bin\
   && wget -N https://github.com/caddyserver/caddy/releases/download/v${caddy_version}/${caddy_file} \
   && tar -zxf ${caddy_file} \
   && mv caddy /usr/local/bin/ \
@@ -68,4 +68,6 @@ groupadd junv \
   && mkdir -p /data && chown junv:junv /data \
   && mkdir -p /data/cloud \
   && chown junv:junv /data/cloud \
-  && ln -s /data/cloud /app
+  && ln -s /data/cloud /app \
+  && apt remove -y unzip\
+  && apt clean