diff --git a/Dockerfile b/Dockerfile
index ad9ffcfdf..c9d42e46f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -22,14 +22,15 @@ RUN npm install --production \
 # Create actual CryptPad image
 FROM node:lts-slim
 ENV DEBIAN_FRONTEND=noninteractive
-RUN apt update && apt install -y git rdfind && rm -rf /var/lib/apt/lists/*
 
 # Create user and group for CryptPad so it does not run as root
 RUN groupadd cryptpad -g 4001
 RUN useradd cryptpad -u 4001 -g 4001 -d /cryptpad
 
 # Install wget for healthcheck
-RUN apt-get update && apt-get install --no-install-recommends -y wget && \
+# Install git, rdfind, unzip and curl for install-onlyoffice.sh
+RUN apt-get update && apt-get install --no-install-recommends -y \
+    wget git rdfind curl unzip ca-certificates && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*