tiku-backend.net/Tiku.DbMigrator/DesignTimeTikuDbContextFactory.cs

using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Design;
using Tiku.Infrastructure.Persistence;

namespace Tiku.DbMigrator;

public sealed class DesignTimeTikuDbContextFactory : IDesignTimeDbContextFactory<TikuDbContext>
{
    public TikuDbContext CreateDbContext(string[] args)
    {
        var connectionString =
            Environment.GetEnvironmentVariable("DATABASE_URL") ??
            $"Host=localhost;Database=tiku;Username={Environment.UserName}";

        var options = new DbContextOptionsBuilder<TikuDbContext>()
            .UseNpgsql(connectionString, npgsql =>
                npgsql.MigrationsAssembly(typeof(TikuDbContext).Assembly.FullName))
            .Options;

        return new TikuDbContext(options);
    }
}