Update container for DB backup container

Author: Rub21

images/backup-restore/Dockerfile

@@ -1,19 +1,14 @@
-FROM ubuntu:16.04
+FROM python:3.9.9
 ENV workdir /app
 RUN apt-get update
 RUN apt-get install -y \
-    wget \
-    python-pip \
-    software-properties-common \
-    python-software-properties \
-    curl
-RUN wget -q https://www.postgresql.org/media/keys/ACCC4CF8.asc -O - | apt-key add -
-RUN sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ xenial-pgdg main" >> /etc/apt/sources.list.d/pgdg.list'
-RUN apt-get update
-RUN apt-get install -y postgresql postgresql-contrib
+    curl \
+    postgresql-client
+
+# Install AWS and GCP cli
 RUN pip install awscli
 RUN curl -sSL https://sdk.cloud.google.com | bash
 RUN ln -f -s /root/google-cloud-sdk/bin/gsutil /usr/bin/gsutil
 WORKDIR $workdir
 COPY ./start.sh .
-CMD ./start.sh
+CMD ./start.sh