diff --git a/Dockerfile b/Dockerfile
index bb3db07..2133058 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,6 +19,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
         ca-certificates \
         curl \
         software-properties-common \
+        gpg-agent \
     && rm -rf /var/lib/apt/lists/* \
     && curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add - \
     && add-apt-repository "deb https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" \