make linuxserver.io duplicati image as the base

Dockerfile

@@ -1,8 +1,24 @@
 # === Dockerfile ===
-FROM postgres:17-alpine
+FROM ghcr.io/linuxserver/duplicati:2.1.0
 
+# Remove old docker
+RUN for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do apt-get remove $pkg; done
 # Install Docker CLI + bash + core utilities
-RUN apk add --no-cache docker-cli bash coreutils btrfs-progs \
+RUN apt-get update \
+  && apt-get install ca-certificates curl \
+  && install -m 0755 -d /etc/apt/keyrings \
+  && curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc \
+  && chmod a+r /etc/apt/keyrings/docker.asc \
+  && echo \
+  "deb [arch=$(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
+
+
+
+RUN apt-get -y install docker-ce docker-ce-cli \
+  && containerd.io docker-buildx-plugin docker-compose-plugin postrgres17 \
   && mkdir -p /backups
 
 # Copy backup script