From 571e0f32825afd63dd82a5462e0f7f3d70f2d9dc Mon Sep 17 00:00:00 2001
From: Alex Hyett <hyettdotme@users.noreply.github.com>
Date: Thu, 6 Jul 2017 10:03:51 +0100
Subject: [PATCH] Initial commit

---
 Dockerfile         | 28 ++++++++++++++++++++++++++++
 Program.cs         | 12 ++++++++++++
 README.md          | 21 +++++++++++++++++++++
 docker-compose.yml |  6 ++++++
 dotnet-cron.csproj |  8 ++++++++
 schedule           | 11 +++++++++++
 6 files changed, 86 insertions(+)
 create mode 100644 Dockerfile
 create mode 100644 Program.cs
 create mode 100644 README.md
 create mode 100644 docker-compose.yml
 create mode 100644 dotnet-cron.csproj
 create mode 100644 schedule

diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..fc61780
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,28 @@
+FROM microsoft/dotnet:1.1.1-sdk
+
+ARG BUILDCONFIG=DEBUG
+
+# Install Cron
+RUN apt-get update -qq && apt-get -y install cron -qq --force-yes
+
+# Copy project files to avoid restoring packages if they haven't changed
+COPY . /app/.
+WORKDIR /app/
+
+# Set up schedule
+ADD schedule /etc/cron.d/schedule
+RUN chmod 0644 /etc/cron.d/schedule
+
+# Create log file
+RUN touch /var/log/cron.log
+RUN chmod 0666 /var/log/cron.log
+
+# Publish dotnet core app
+RUN dotnet restore
+RUN dotnet publish -c $BUILDCONFIG -o out
+
+# Volume required for tail command
+VOLUME /var/log
+
+# Run Cron
+CMD /usr/sbin/cron && tail -f /var/log/cron.log
\ No newline at end of file
diff --git a/Program.cs b/Program.cs
new file mode 100644
index 0000000..65043a7
--- /dev/null
+++ b/Program.cs
@@ -0,0 +1,12 @@
+using System;
+
+namespace test_dotnet
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine($"This program should be running on a schedule: {DateTime.Now}");
+        }
+    }
+}
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..4e26d42
--- /dev/null
+++ b/README.md
@@ -0,0 +1,21 @@
+# .Net Core console app running in a schedule in Docker
+
+This is an example project showing you how to run a console app in a schedule in a docker container.
+
+The docker image makes use of cron which is a unix utility for running commands on a schedule.
+
+The docker file attached does the following:
+1. Installs cron on the standard microsoft/dotnet:1.1.1-sdk image.
+2. Copies your application files across to the docker image.
+3. Copies the schedule file across to the docker image.
+4. Restores and Publishes your dotnet core image. 
+5. Runs cron and outputs the contents of the /var/log/cron.log file to the screen.
+
+## How to use
+To use this within your own dotnet core console app you will need the Dockerfile, schedule file dockerignore file and docker-compose.yml (if you are not using your own).
+
+You need to modify the schedule file to reference the dll of your console app. 
+
+Then run:
+
+`docker-compose up`
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..ccb3864
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,6 @@
+version: "3"
+
+services:
+  console:
+    build: .
+    container_name: recurring-console
diff --git a/dotnet-cron.csproj b/dotnet-cron.csproj
new file mode 100644
index 0000000..abb9969
--- /dev/null
+++ b/dotnet-cron.csproj
@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp1.1</TargetFramework>
+  </PropertyGroup>
+
+</Project>
diff --git a/schedule b/schedule
new file mode 100644
index 0000000..cc2cb6b
--- /dev/null
+++ b/schedule
@@ -0,0 +1,11 @@
+* * * * * root dotnet /app/out/dotnet-cron.dll >> /var/log/cron.log 2>&1
+
+#* * * * * *
+#| | | | | | 
+#| | | | | +-- Year              (range: 1900-3000)
+#| | | | +---- Day of the Week   (range: 1-7, 1 standing for Monday)
+#| | | +------ Month of the Year (range: 1-12)
+#| | +-------- Day of the Month  (range: 1-31)
+#| +---------- Hour              (range: 0-23)
+#+------------ Minute            (range: 0-59)
+# Cron requires a blank space at the end of the file so leave this here.
\ No newline at end of file