feat: add dotnet quickstart

Author: berviantoleo

.github/dependabot.yml

@@ -58,3 +58,8 @@ updates:
     schedule:
       interval: weekly
     open-pull-requests-limit: 10
+  - package-ecosystem: docker
+    directory: "./dockerfiles/dotnet"
+    schedule:
+      interval: weekly
+    open-pull-requests-limit: 10  

.github/labeler.yml

@@ -52,3 +52,9 @@ multi:
 github_actions:
   - changed-files:
       - any-glob-to-any-file: '/.github/workflows/*'
+
+
+# Add 'dotnet' label to any change to Dockerfile* files within the root dir
+dotnet:
+  - changed-files:
+      - any-glob-to-any-file: 'dockerfiles/dotnet/**'

.github/workflows/github-docker-registry-push.yml

@@ -214,3 +214,13 @@ jobs:
           platforms: linux/amd64, linux/aarch64
           push: true
           tags: ghcr.io/${{ env.REPO_NAME }}/jenkinsci-tutorials:cpp_${{ env.BRANCH }}
+      
+      - name: Build and push the jenkins agent for dotnet tutorial
+        # This step builds and pushes the Jenkins agent for the C++ tutorial
+        if: contains(env.files, 'dockerfiles/dotnet/Dockerfile')
+        uses: docker/build-push-action@v6
+        with:
+          context: ./dockerfiles/cpp
+          platforms: linux/amd64, linux/aarch64
+          push: true
+          tags: ghcr.io/${{ env.REPO_NAME }}/jenkinsci-tutorials:cpp_${{ env.BRANCH }}

docker-compose.yaml

@@ -35,6 +35,7 @@ services:
       - android
       - multi
       - golang
+      - dotnet
       - default
     # This service depends on the sidekick_service (generating SSH keys and JCasc token) completing successfully.
     depends_on:
@@ -61,6 +62,7 @@ services:
       - android
       - golang
       - cpp
+      - dotnet
       - default
     # The CASC_RELOAD_TOKEN environment variable is used by the Jenkins controller to restart the Configuration as Code (JCasc) plugin configuration.
     environment:
@@ -304,7 +306,28 @@ services:
       retries: 5
     volumes:
       - agent-ssh-dir:/home/jenkins/.ssh:ro # Mounts the agent-ssh-dir volume to the /home/jenkins/.ssh path inside the container as read-only
-
+  dotnet:
+    image: ${IMAGE_PREFIX}/${GHCR_USERNAME}/quickstart-tutorials/jenkinsci-tutorials:dotnet_${BRANCH_SUFFIX}
+    environment:
+      - GITPOD_WORKSPACE_URL=${GITPOD_WORKSPACE_URL}
+    container_name: desktop-jenkins_agent-1
+    profiles:
+      - dotnet
+    depends_on:
+      sidekick_service:
+        condition: service_completed_successfully # Depends on the successful completion of the sidekick_service
+      jenkins_controller:
+        condition: service_started
+    ports:
+      - "5000:5000"
+    healthcheck:
+      test: ["CMD-SHELL", "[ -f /home/jenkins/.ssh/authorized_keys ] || exit 1"]
+      # Checks if the authorized_keys file exists in the /home/jenkins/.ssh path
+      interval: 5s
+      timeout: 10s
+      retries: 5
+    volumes:
+      - agent-ssh-dir:/home/jenkins/.ssh:ro # Mounts the agent-ssh-dir volume to the /home/jenkins/.ssh path inside the container as read-only
 volumes:
   jenkins_home: null
   empty_jenkins_home: null

dockerfiles/dotnet/Dockerfile

@@ -0,0 +1,22 @@
+FROM jenkins/ssh-agent:6.10.0 as ssh-agent
+
+# ca-certificates because curl uses certificates from ca-certificates
+RUN apt-get update && apt-get install -y --no-install-recommends libc6 libgcc1 libgssapi-krb5-2 libicu70 libssl3 libstdc++6 zlib1g && apt-get clean && \
+  rm -rf /var/lib/apt/lists/*
+
+# Now time to install dotnet
+ARG DOTNET_VERSION=8.0
+
+# Set SHELL flags for RUN commands to allow -e and pipefail
+# Rationale:https://github.com/hadolint/hadolint/wiki/DL4006
+SHELL ["/bin/bash", "-eo", "pipefail", "-c"]
+
+RUN wget https://dot.net/v1/dotnet-install.sh -O dotnet-install.sh && chmod +x ./dotnet-install.sh && \
+    ./dotnet-install.sh --channel ${DOTNET_VERSION}}
+
+ENV DOTNET_ROOT=$HOME/.dotnet    
+ENV PATH=$PATH:$DOTNET_ROOT:$DOTNET_ROOT/tools
+
+RUN echo "PATH=${PATH}" >> /etc/environment && chown -R jenkins:jenkins "${JENKINS_AGENT_HOME}" && \
+    dotnet --list-sdks
+