Docker部署NETCORE应用程序
创建.netcore项目，本文以ASP.NET Core2.2 版本为例
设置Dockerfile属性始终复制
编辑Dockerfile内容
FROM microsoft/dotnet:2.2-aspnetcore-runtime
MAINTAINER lihongyuan
LABEL description="this is a test website"
LABEL version="1.0"
WORKDIR /app
COPY . .
EXPOSE 8888
ENTRYPOINT ["dotnet", "ProjNetCore2.dll"]
说明：
FROM microsoft/dotnet:2.2-aspnetcore-runtime #基础镜像为dotnetcore
MAINTAINER demo #作者 LABEL description="this is a test website" #描述
LABEL version="1.0" #描述 WORKDIR /app #工作目录
COPY . . #将当前目录下的文件，复制到WORKDIR目录
EXPOSE 8888 #容器暴漏8888端口，与Program.cs中设置的端口一致
ENTRYPOINT ["dotnet","demo.dll"] #运行容器的命令
修改Program.cs文件，默认端口的指向为 8888 与Dockerfile 文中一致。
public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
WebHost.CreateDefaultBuilder(args)
.UseUrls("http://*:8888")
.UseStartup<Startup>();
发布项目
使用WinSCP 把发布后的项目上传到 服务器上。
些处上传目录为 /tmp/web
[root@localhost ~]# cd /tmp/web/
[root@localhost web]#
[root@localhost web]# ls
publish
[root@localhost web]#
根据当前目录下dockerfile配置文件，进行打包（demo 为自己定义的镜像名）
docker build -t demo .
[root@localhost ~]#
[root@localhost ~]# cd /tmp/web/publish/
[root@localhost publish]# ls
appsettings.Development.json Dockerfile ProjNetCore2.dll ProjNetCore2.runtimeconfig.json ProjNetCore2.Views.pdb wwwroot
appsettings.json ProjNetCore2.deps.json ProjNetCore2.pdb ProjNetCore2.Views.dll web.config
[root@localhost publish]#
[root@localhost publish]# docker build -t imagedemo .
Sending build context to Docker daemon .212MB
Step / : FROM microsoft/dotnet:2.2-aspnetcore-runtime
---> ccf4063f0898
Step / : MAINTAINER lihongyuan
---> Running in 176e4b1eba2b
Removing intermediate container 176e4b1eba2b
---> 5d384a0303f9
Step / : LABEL description="this is a test website"
---> Running in 09664d85b4dd
Removing intermediate container 09664d85b4dd
---> e9890e799c19
Step / : LABEL version="1.0"
---> Running in 93724ba2ac89
Removing intermediate container 93724ba2ac89
---> b91ff0f19154
Step / : WORKDIR /app
---> Running in 338a59ca24b3
Removing intermediate container 338a59ca24b3
---> 64098342a151
Step / : COPY . .
---> 26ab61b0731b
Step / : EXPOSE
---> Running in 4c0ee7ff2687
Removing intermediate container 4c0ee7ff2687
---> 5760b9754387
Step / : ENTRYPOINT ["dotnet", "ProjNetCore2.dll"]
---> Running in 979a9b8c68b3
Removing intermediate container 979a9b8c68b3
---> 5ae0691c4556
Successfully built 5ae0691c4556
Successfully tagged imagedemo:latest
[root@localhost publish]#
打镜像成功：
[root@localhost publish]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
imagedemo latest 5ae0691c4556 About a minute ago 265MB
nginx latest 540a289bab6c weeks ago 126MB
microsoft/dotnet 2.2-aspnetcore-runtime ccf4063f0898 weeks ago 261MB
nginx <none> ab56bba91343 weeks ago 126MB
rancher/rancher-agent v2.2.8 d499bdb8fd09 months ago 285MB
rancher/rancher latest 59caa36aff1e months ago 482MB
rancher/rke-tools v0.1.42 6fb74f33a5e1 months ago 131MB
rancher/hyperkube v1.14.6-rancher1 4c0a26e51da8 months ago .05GB
sonatype/nexus3 latest 35ca857d5b19 months ago 599MB
rancher/nginx-ingress-controller 0.21.-rancher3 2b37f252629b months ago 569MB
rancher/kube-api-auth v0.1.3 2817cb463960 months ago 149MB
rancher/coredns-coredns 1.3. eb516548c180 months ago .3MB
rancher/calico-node v3.4.0 a89b45f36d5e months ago .9MB
rancher/calico-cni v3.4.0 d531d047a4e2 months ago .4MB
rancher/coreos-etcd v3.3.10-rancher1 643c21638c1c months ago .5MB
rancher/cluster-proportional-autoscaler 1.3. 33813c948942 months ago .8MB
rancher/nginx-ingress-controller-defaultbackend 1.5-rancher1 b5af743e5984 months ago .13MB
rancher/metrics-server v0.3.1 61a0c90da56e months ago .8MB
rancher/coreos-flannel v0.10.0 f0fad859c909 months ago .6MB
rancher/pause 3.1 da86e6ba6ca1 months ago 742kB
[root@localhost publish]#
运行Docker容器
docker run --name mydemo -d -p : imagedemo
说明：
--name 后面跟容器名称
-p是进行宿主和容器之间端口的映射，（-p 宿主端口：容器端口）
-d命令，容器就会一直运行，即使关掉终端窗口
imagedemo为前面生成的项目镜像
以后台模式启动一个容器,将容器的 8888 端口映射到主机的 8888 端口
运行后，可查看到新的容器：
访问网站：http://192.168.122.199:8888/
完成！
Docker 进入容器命令：
docker exec -it 775c7c9ee1e1 /bin/bash
退出容器：exit