1. 确保Docker服务正在运行并且已正确配置。可以使用以下命令检查Docker服务的状态：

sudo systemctl status docker

2. 检查Dockerfile中的配置是否正确。确保所有依赖项都已正确安装并配置。

3. 清除并重新构建Docker映像。使用以下命令执行此操作：

docker rmi docker build -t .

4. 如果使用了远程主机，请确保正确设置连接字符串和密钥。可以使用以下代码示例来设置连接字符串和密钥：

var builder = new ConfigurationBuilder() .SetBasePath(Directory.GetCurrentDirectory()) .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true) .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true) .AddEnvironmentVariables(); if (env.IsDevelopment()) { builder.AddUserSecrets(); }

Configuration = builder.Build();

services.AddDbContext(options => options.UseSqlServer( Configuration.GetConnectionString("DefaultConnection")));

services.AddDefaultIdentity(options => options.SignIn.RequireConfirmedAccount = true) .AddEntityFrameworkStores();

services.AddAuthentication() .AddGoogle(options => { IConfigurationSection googleAuthNSection = Configuration.GetSection("Authentication:Google");

    options.ClientId = googleAuthNSection["ClientId"];
    options.ClientSecret = googleAuthNSection["ClientSecret"];
})
.AddFacebook(options =>
{
    IConfigurationSection facebookAuthNSection = Configuration.GetSection("Authentication:Facebook");

    options.AppId = facebookAuthNSection["AppId"];
    options.AppSecret = facebookAuthNSection["AppSecret"];
});

5. 如果仍然遇到错误，请尝试从Docker映像中手动构建Web应用程序。可以使用以下命令执行此操作：

docker run -it /bin/bash cd /app dotnet .dll

这将启动Docker容器