diff --git a/Dockerfile b/Dockerfile
index b76ea94..2b699e3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,5 @@
 FROM ubuntu:22.04 AS base
+LABEL maintainer="Jun Kurihara"
 
 SHELL ["/bin/sh", "-x", "-c"]
 ENV SERIAL 2
@@ -26,13 +27,13 @@ RUN apt-get update && apt-get install -qy --no-install-recommends $BUILD_DEPS &&
 
 ########################################
 FROM base AS runner
-LABEL maintainer="Jun Kurihara"
 
-ENV RUNTIME_DEPS bash logrotate ca-certificates
+ENV RUNTIME_DEPS logrotate ca-certificates
 
 RUN apt-get update && \
   apt-get install -qy --no-install-recommends $RUNTIME_DEPS && \
   apt-get -qy clean && \
+  apt-get -qy autoremove &&\
   rm -fr /tmp/* /var/tmp/* /var/cache/apt/* /var/lib/apt/lists/* /var/log/apt/* /var/log/*.log &&\
   mkdir -p /opt/rpxy/sbin &&\
   mkdir -p /var/log/rpxy && \
diff --git a/docker-bin/entrypoint.sh b/docker-bin/entrypoint.sh
index 83fdf5e..055f745 100644
--- a/docker-bin/entrypoint.sh
+++ b/docker-bin/entrypoint.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 LOG_FILE=/var/log/rpxy/rpxy.log
 
 if [ -z ${LOG_TO_FILE} ]; then
diff --git a/docker-bin/run.sh b/docker-bin/run.sh
index 1b0801e..cf28924 100644
--- a/docker-bin/run.sh
+++ b/docker-bin/run.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 LOG_FILE=/var/log/rpxy/rpxy.log
 CONFIG_FILE=/etc/rpxy.toml
diff --git a/docker-compose.yml b/docker-compose.yml
index 17a5fd4..8514a4a 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -15,6 +15,6 @@ services:
     tty: false
     privileged: true
     volumes:
-      - ./localhost.crt:/certs/localhost.crt:ro
-      - ./localhost.key:/certs/localhost.key:ro
+      - ./example-certs/server.crt:/certs/server.crt:ro
+      - ./example-certs/server.key:/certs/server.key:ro
       - ./config-example.toml:/etc/rpxy.toml:ro