Jenkins - docker：未找到

Question

I'm pretty new to do docker and jenkins but wanted to see if I could get a node app automatically deployed and running on my raspberry pi. In an ideal world, I'd like to have Jenkins pull down code from github, use a jenkinsfile and dockerfile to build and run the docker image (hopefully this is possible).

jenkinsfile

pipeline {
    agent {
        dockerfile true
    }
    environment {
        CI = 'true' 
        HOME = '.'
    }
    stages {
        stage('Install dependencies') {
            steps {
                sh 'npm install'
            }
        }
        stage('Test') { 
            steps {
                sh './scripts/test' 
            }
        }
        stage('Build Container') { 
            steps {
                sh 'docker build -t test-app:${BUILD_NUMBER} . ' 
            }
        }
    }
}

dockerfile

 # Create image based on the official Node image
FROM node:12

# Create a directory where our app will be placed
RUN mkdir -p /usr/src/app

# Change directory so that our commands run inside this new directory
WORKDIR /usr/src/app

# Copy dependency definitions
COPY package.json /usr/src/app

# Install dependecies
RUN npm install

# Get all the code needed to run the app
COPY . /usr/src/app

# Expose the port the app runs in
EXPOSE 3000

# Serve the app
CMD ["npm", "start"]

However, when I try to run this in jenkins, I get the following error: ../script.sh: docker: not found . This seems to be the case for any docker command. I actually tried running some other command starting with 'sudo' and it complained that sudo: not found . Is there a step missing or am I trying to do something in an incorrect way. (NOTE: docker is installed on the raspberry pi. I can log in with the jenkins user and execute docker commands. It just doesn't work through the web ui) Any advice would be appreciated.

Thanks!

Answer 1

Apparently this section was breaking it:

agent {
    dockerfile true
}

When I set this:

agent any

it finished the build, including docker commands without any issues. I guess I just don't understand how that piece works. Any explanations would be helpful!