Create Dockerfile

Dockerfile

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+# Use the official PostgreSQL image as the base image
+FROM postgres:13
+
+# Set the environment variables for the PostgreSQL database
+ENV POSTGRES_DB=mydb
+ENV POSTGRES_USER=myuser
+ENV POSTGRES_PASSWORD=mypassword
+
+# Copy any custom SQL scripts to the container
+COPY init.sql /docker-entrypoint-initdb.d/
+
+# Expose the default PostgreSQL port
+EXPOSE 5432
+
+# Start the PostgreSQL server when the container is launched
+CMD ["postgres"]