diff --git a/Dockerfile b/Dockerfile
index 59a5181..ebca232 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -36,15 +36,22 @@ ENV RC_VERSION 1.1.1
 
 WORKDIR /app
 
-RUN curl -fSL "https://releases.rocket.chat/${RC_VERSION}/download" -o rocket.chat.tgz \
+RUN set -x; BUILDDEPS="python make git g++" \
+&&  apt-get update &&  apt-get install -y --no-install-recommends ${BUILDDEPS} \
+&&  curl -fSL "https://releases.rocket.chat/${RC_VERSION}/download" -o rocket.chat.tgz \
 &&  curl -fSL "https://releases.rocket.chat/${RC_VERSION}/asc" -o rocket.chat.tgz.asc \
 &&  gpg --batch --verify rocket.chat.tgz.asc rocket.chat.tgz \
-&&  tar zxvf rocket.chat.tgz \
+&&  tar zxf rocket.chat.tgz \
 &&  rm rocket.chat.tgz rocket.chat.tgz.asc \
 &&  cd bundle/programs/server \
 &&  npm install \
 &&  npm cache clear --force \
-&&  chown -R rocketchat:rocketchat /app
+&&  chown -R rocketchat:rocketchat /app \
+&&  cd /app/bundle/programs/server/npm \
+&&  npm uninstall sharp && npm install sharp \
+&&  cd /app/bundle/programs/server/npm \
+&&  npm uninstall grpc && npm install grpc \
+&&  apt-get purge -y --auto-remove $BUILDDEPS
 
 USER rocketchat