diff --git a/Dockerfile b/Dockerfile
index ad30b0c..62e451e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,9 +8,7 @@ ENV HTTP_BASIC_USER=sutty
 ENV HTTP_BASIC_PASSWORD=gibberish
 ENV NOKOGIRI_USE_SYSTEM_LIBRARIES=1
 
-COPY ./gem-compiler.gem /tmp/
-RUN gem install --no-user-install --no-document /tmp/gem-compiler.gem
-RUN gem install --no-user-install --no-document --source https://rubygems.org geminabox mini_portile2
+RUN gem install --no-user-install --no-document --source https://rubygems.org geminabox mini_portile2 gem-compiler
 
 COPY ./gemcompiler.sh /usr/local/bin/gemcompiler
 RUN chmod 755 /usr/local/bin/gemcompiler
@@ -20,6 +18,7 @@ VOLUME /srv/gems
 
 RUN apk add --no-cache file-dev
 RUN apk add --no-cache libssh2-dev
+RUN apk add --no-cache libc6-compat libstdc++
 
 USER builder
 ENTRYPOINT /usr/local/bin/gemcompiler
diff --git a/gem-compiler.gem b/gem-compiler.gem
deleted file mode 100644
index 87185a1..0000000
Binary files a/gem-compiler.gem and /dev/null differ
diff --git a/gemcompiler.sh b/gemcompiler.sh
index 6c4d870..b90df82 100644
--- a/gemcompiler.sh
+++ b/gemcompiler.sh
@@ -6,11 +6,11 @@ PLATFORM=`ruby -e "puts RbConfig::CONFIG['arch']"`
 cd /srv/gems
 
 test -f ${GEM}-${VERSION}.gem \
-  || gem fetch --source=https://rubygems.org --platform=ruby \
+  || gem fetch --source=https://${SUTTY} --platform=ruby \
                --version ${VERSION} ${GEM}
 
 test -f ${GEM}-${VERSION}-${PLATFORM}.gem \
-  || gem compile -V --prune ${GEM}-${VERSION}.gem
+  || gem compile -V --prune --strip "strip --strip-unneeded" ${GEM}-${VERSION}.gem
 
 gem inabox -o ${GEM}-${VERSION}-${PLATFORM}.gem \
   --host https://${HTTP_BASIC_USER}:${HTTP_BASIC_PASSWORD}@gems.${SUTTY}