docker instructions added

Author: jmbl1685

CacheSample.WebApi/Dockerfile

@@ -1,10 +1,15 @@
-#See https://aka.ms/containerfastmode to understand how Visual Studio uses this Dockerfile to build your images for faster debugging.
+FROM centos:7 AS base
+
+# Add Microsoft package repository and install ASP.NET Core
+RUN rpm -Uvh https://packages.microsoft.com/config/centos/7/packages-microsoft-prod.rpm \
+  && yum install -y aspnetcore-runtime-6.0
+
+# Ensure we listen on any IP Address 
+ENV DOTNET_URLS=http://+:3000
 
-FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS base
 WORKDIR /app
-EXPOSE 80
-EXPOSE 443
 
+# ... remainder of dockerfile as before
 FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
 WORKDIR /src
 COPY ["CacheSample.WebApi/CacheSample.WebApi.csproj", "CacheSample.WebApi/"]

README.md

@@ -1,5 +1,40 @@
 # ASP.NET Core (.NET 6) Web API with cache
 
+To run this project from Docker
+
+```sh
+$> docker build -t aspnet-core-net-6-api-cache -f ./CacheSample.WebApi/Dockerfile .
+$> docker create --name aspnet-core-net-6-api-cache-core aspnet-core-net-6-api-cache
+$> docker start aspnet-core-net-6-api-cache-core
+$> docker run --rm -p 3000:3000 aspnet-core-net-6-api-cache
+```
+
+Solution sample to (port is already allocated)
+```
+Bind for 0.0.0.0:3000 failed: port is already allocated.
+
+$> docker ps
+
+CONTAINER ID   IMAGE                         COMMAND                  CREATED          STATUS          PORTS                    NAMES
+69e65c95dfaf   aspnet-core-net-6-api-cache   "dotnet CacheSample.…"   35 seconds ago   Up 29 seconds                            aspnet-core-net-6-api-cache-core
+
+$> docker stop 69e65c95dfaf
+
+$> docker ps 
+
+CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
+
+$> docker run --rm -p 3000:3000 aspnet-core-net-6-api-cache
+info: Microsoft.Hosting.Lifetime[14]
+      Now listening on: http://[::]:3000
+info: Microsoft.Hosting.Lifetime[0]
+      Application started. Press Ctrl+C to shut down.
+info: Microsoft.Hosting.Lifetime[0]
+      Hosting environment: Production
+info: Microsoft.Hosting.Lifetime[0]
+      Content root path: /app/
+```
+
 #### Using Memory
 ![image](https://user-images.githubusercontent.com/22874642/177662412-5d5e270c-09bf-4024-9a21-4df086c20e8b.png)
 

run.cmd

@@ -0,0 +1,4 @@
+docker build -t aspnet-core-net-6-api-cache -f ./CacheSample.WebApi/Dockerfile .
+docker create --name aspnet-core-net-6-api-cache-core aspnet-core-net-6-api-cache
+docker start aspnet-core-net-6-api-cache-core
+docker run --rm -p 3000:3000 aspnet-core-net-6-api-cache

run.sh

@@ -0,0 +1,4 @@
+docker build -t aspnet-core-net-6-api-cache -f ./CacheSample.WebApi/Dockerfile .
+docker create --name aspnet-core-net-6-api-cache-core aspnet-core-net-6-api-cache
+docker start aspnet-core-net-6-api-cache-core
+docker run --rm -p 3000:3000 aspnet-core-net-6-api-cache