Change to debian and install multiple client versions

Dockerfile

@@ -1,5 +1,26 @@
-FROM alpine:latest
+FROM debian:bullseye
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+ENV PG_DIR=/usr/lib/postgresql
 
+RUN apt-get update     \
+    && apt-get install --no-install-recommends -y \
+        apt-utils \
+        ca-certificates \
+        lsb-release \
+        pigz \
+        curl \
+        jq \
+    && echo "deb http://apt.postgresql.org/pub/repos/apt/ $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list \
+    && cat /etc/apt/sources.list.d/pgdg.list \
+    && curl --silent https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add - \
+    && apt-get update \
+    && apt-get install --no-install-recommends -y  \
+        postgresql-client-14  \
+        postgresql-client-13  \
+        postgresql-client-12  \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
 RUN apk add restic postgresql-client bash pigz curl jq openssh-client
 COPY dump.sh ./
 ADD ssh-config /root/.ssh/config