Add Dockerfile

Dockerfile

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+FROM ubuntu:22.04
+
+# Timezone (You can set your desired timezone!)
+ENV TZ=Asia/Tehran
+
+# Run the update.
+RUN apt-get update && apt-get upgrade -y
+
+# Install apt-utils, PostgreSQL client and s3cmd CLI.
+RUN apt-get install -y apt-utils ca-certificates
+RUN DEBIAN_FRONTEND=noninteractive TZ=Asia/Tehran apt-get install -y postgresql-client s3cmd
+
+# Copy the backup script
+COPY backup.sh /
+
+# Copy the lifecycle file.
+COPY lifecycle.xml /
+
+# Make the backup script executable.
+RUN chmod +x /backup.sh