* Added initial template for postgresql Container

roles/apps/templates/postgres/Containerfile.j2

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+FROM almalinux:9-base
+
+# Install PostgreSQL 16 using built-in module
+RUN dnf -y update && \
+    dnf -y module enable postgresql:{{postsgresql_version}} && \
+    dnf -y install postgresql-server && \
+    dnf clean all
+
+# Create directory structure without initializing
+RUN mkdir -p /var/lib/pgsql/data && \
+    chown -R postgres:postgres /var/lib/pgsql && \
+    chmod 700 /var/lib/pgsql/data
+
+# Add entrypoint script
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+USER postgres
+ENV PGDATA=/var/lib/pgsql/data
+EXPOSE 5432
+
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["postgres", "-D", "/var/lib/pgsql/data"]
+

roles/apps/templates/postgres/entrypoint.sh

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+#!/bin/bash
+set -e
+
+# Initialize only if data directory is empty
+if [ -z "$(ls -A $PGDATA)" ]; then
+    echo "Initializing PostgreSQL database..."
+    /usr/bin/postgresql-setup --initdb
+fi
+
+exec "$@"
+