Upgrade to .Net Core 2.0.0 and improve regex

.gitignore

@@ -0,0 +1,2 @@
+**/bin
+**/obj

ConsoleSettings.cs

@@ -0,0 +1,7 @@
+namespace DotNetCron
+{
+    public class ConsoleSettings
+    {
+        public string OutputString { get; set; }
+    }
+}

Dockerfile

@@ -1,4 +1,4 @@
-FROM microsoft/dotnet:1.1.1-sdk AS build
+FROM microsoft/dotnet:2.0.0-sdk AS build
 
 ARG BUILDCONFIG=RELEASE
 
@@ -11,21 +11,21 @@ COPY . .
 RUN dotnet publish -c $BUILDCONFIG -o out
 
 # build runtime image
-FROM microsoft/dotnet:1.1.1-runtime 
+FROM microsoft/dotnet:2.0.0-runtime 
 WORKDIR /app
 COPY --from=build /build/out ./
 
-# Add export environment variable script
-COPY export_env.sh .
-COPY run_app.sh .
-RUN chmod +x export_env.sh run_app.sh
-
 # Install Cron
 RUN apt-get update -qq && apt-get -y install cron -qq --force-yes
 
-# Set up schedule
-ADD schedule /etc/cron.d/schedule
-RUN chmod 0644 /etc/cron.d/schedule
+# Add export environment variable script and schedule
+COPY *.sh ./
+COPY schedule /etc/cron.d/schedule
+RUN sed -i 's/\r//' export_env.sh \
+    && sed -i 's/\r//' run_app.sh \
+    && sed -i 's/\r//' /etc/cron.d/schedule \
+    && chmod +x export_env.sh run_app.sh \
+    && chmod 0644 /etc/cron.d/schedule
 
 # Create log file
 RUN touch /var/log/cron.log

Program.cs

@@ -1,13 +1,23 @@
 using System;
+using System.IO;
+using Microsoft.Extensions.Configuration;
 
-namespace test_dotnet
+namespace DotNetCron
 {
     class Program
     {
         static void Main(string[] args)
         {
-            Console.WriteLine($"This program should be running on a schedule: {DateTime.Now}");
-            Console.WriteLine($"TEST_ENV={Environment.GetEnvironmentVariable("TEST_ENV")}");
+            var configuration = new ConfigurationBuilder()
+                .SetBasePath(Directory.GetCurrentDirectory())
+                .AddJsonFile("appsettings.json", optional:true, reloadOnChange:true)  
+                //.AddEnvironmentVariables(prefix: "CRON_")           
+                .Build();
+
+            var consoleSettings = new ConsoleSettings();
+            configuration.GetSection("Console").Bind(consoleSettings);
+
+            Console.WriteLine($"{DateTime.UtcNow}: Output String: '{consoleSettings.OutputString}'");
         }
     }
 }

appsettings.json

@@ -0,0 +1,5 @@
+{
+    "Console": {
+        "OutputString": "Test_String"
+    }
+}

docker-compose.yml

@@ -5,4 +5,4 @@ services:
     build: .
     container_name: recurring-console
     environment:
-      - TEST_ENV=TestValue3
+      - CRON_Console:OutputString=NewTestString

dotnet-cron.csproj

@@ -2,7 +2,15 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp1.1</TargetFramework>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
   </PropertyGroup>
-
-</Project>
+ <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="2.0.0"/>
+    <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="2.0.0"/>
+    <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="2.0.0"/>
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="2.0.0"/>
+    <Content Include="appsettings.json">
+      <CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
+    </Content>
+  </ItemGroup>
+</Project>

export_env.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
 
 echo '#!/bin/bash' > /app/set_env.sh
-printenv | sed '/^affinity:container/ d' | sed -r 's/^([a-zA-Z_]+[a-zA-Z0-9_:-]*)=(.*)$/export \1="\2"/g' >> /app/set_env.sh
+printenv | sed '/^affinity:container/ d' | sed -r ':b; s/^([^=]*):/\1__/g; tb;' | sed -r 's/^([a-zA-Z_]+[a-zA-Z0-9_-]*)=(.*)$/export \1="\2"/g' >> /app/set_env.sh
 chmod +x /app/set_env.sh