use the client instead

Dockerfile

@@ -1,13 +1,13 @@
 FROM ghcr.io/linuxserver/duplicati:2.1.0
 
+ENV DEBIAN_FRONTEND=noninteractive
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
-
 RUN apt-get update -y \
   && apt-get install -y --no-install-recommends \
   ca-certificates \
   curl \
-  && rm -rf /var/lib/apt/lists/* \
+  #&& rm -rf /var/lib/apt/lists/* \
   && install -m 0755 -d /etc/apt/keyrings \
   && curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc \
   && chmod a+r /etc/apt/keyrings/docker.asc \
@@ -15,13 +15,12 @@ RUN apt-get update -y \
   "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
   $(. /etc/os-release && echo "${UBUNTU_CODENAME:-$VERSION_CODENAME}") stable" | \
   tee /etc/apt/sources.list.d/docker.list > /dev/null \
-  && apt-get update -y
-
-RUN apt-get install -y --no-install-recommends \
+  && apt-get update -y \
+  && apt-get install -y --no-install-recommends \
   cron \
   bash \
   docker-ce-cli \
-  postgresql-16 \
+  postgresql-client \
   && rm -rf /var/lib/apt/lists/* \
   && mkdir -p /backups