kewinremy/jenkinslinux

Repository for setting up jenkins on linux containers and building .net core projects

Continous Integration with Jenkins Pipelines for .NET Core Applications (Part 1)

Installing Jenkins Master on Linux containers (OS: Debian 9)

1. Step 1: Jenkins Installation

Create a dockerfile and select the official docker image from jenkins on dockerhub : https://hub.docker.com/r/jenkins/jenkins.

FROM jenkins/jenkins:lts

2. Step 2: Update the jenkinsfile

If you want a fully automatic installation, please update your dockerfile as defined below and create a copy the dotnetInstall.sh in a scripts directory.

FROM jenkins/jenkins:lts

# Setting the User
USER root

# Setting bash as the default shell
SHELL ["/bin/bash", "-c"]

# Installing .NET Core SDK and Runtime
COPY scripts  /var/tmp/scripts
RUN /var/tmp/scripts/dotnetInstall.sh

# Testing cli is installed
RUN dotnet --version

3. Step 3: .NET Core on debian

create a scripts directory in your build directory and the following content to dotnetInstall.sh

# Source: https://docs.microsoft.com/en-us/dotnet/core/install/linux-debian#debian-9-

# Installing sudo on debian
apt-get update
apt-get -y upgrade
apt-get install sudo

# packages
wget -O - https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor > microsoft.asc.gpg
sudo mv microsoft.asc.gpg /etc/apt/trusted.gpg.d/
wget https://packages.microsoft.com/config/debian/9/prod.list
sudo mv prod.list /etc/apt/sources.list.d/microsoft-prod.list
sudo chown root:root /etc/apt/trusted.gpg.d/microsoft.asc.gpg
sudo chown root:root /etc/apt/sources.list.d/microsoft-prod.list

# sdk
sudo apt-get update; \
  sudo apt-get install -y apt-transport-https && \
  sudo apt-get update && \
  sudo apt-get install -y dotnet-sdk-3.1

# runtime
sudo apt-get update; \
  sudo apt-get install -y apt-transport-https && \
  sudo apt-get update && \
  sudo apt-get install -y aspnetcore-runtime-3.1

4. Step 4: Building your docker image

Finally, you can rebuild a second image and run it with the following commands:

docker build -t jenkinslinux:1.0.0 .

5. Step 5: Run your image and start a container

docker run -p 8080:8080 -p 50000:50000 jenkinslinux:1.0.0

6. Step 6: Start using Jenkins

Browse http://localhost:8080 and Jenkins Web Ui will start.

In /var/jenkins_home/secrets/initialAdminPassword you will find the initial password.

You can open see it in your console with cat /var/jenkins_home/secrets/initialAdminPassword