Add Jenkins setup

jenkins/Dockerfile.jenkins

@@ -0,0 +1,12 @@
+FROM jenkins/jenkins:lts
+
+USER root
+
+RUN apt-get update \
+ && apt-get install -y docker.io curl \
+ && curl -L https://github.com/docker/compose/releases/download/v2.27.0/docker-compose-linux-x86_64 \
+      -o /usr/local/bin/docker-compose \
+ && chmod +x /usr/local/bin/docker-compose \
+ && rm -rf /var/lib/apt/lists/*
+
+USER jenkins

jenkins/jenkins-compose.yml

@@ -0,0 +1,26 @@
+version: "3.9"
+
+services:
+  jenkins:
+    build:
+      context: .
+      dockerfile: Dockerfile.jenkins
+    container_name: jenkins
+    ports:
+      - "8080:8080"
+      - "50000:50000"
+    volumes:
+      - jenkins_home:/var/jenkins_home
+      - /var/run/docker.sock:/var/run/docker.sock
+    group_add:
+      - "${DOCKER_GID}"
+    networks:
+      - ci-net
+    restart: unless-stopped
+
+volumes:
+  jenkins_home:
+
+networks:
+  ci-net:
+    external: true