chore(docker): ensure PostgreSQL data directory exists and set timezone

Author: tanhongit

postgres18/Dockerfile

@@ -7,8 +7,11 @@ LABEL description="Postgres18 image for CSlant development"
 # Set Timezone
 #####################################
 ARG TZ=Asia\Ho_Chi_Minh
-ENV TZ ${TZ}
-RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone && chown -R postgres:root /var/lib/postgresql/data
+ENV TZ=${TZ}
+RUN mkdir -p /var/lib/postgresql/data && \
+    ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && \
+    echo $TZ > /etc/timezone && \
+    chown -R postgres:root /var/lib/postgresql/data
 
 COPY pg.cnf /etc/postgresql/conf.d/pg.cnf