Running Docker Container locally

Question

I've a docker image which is used in my Jenkins Pipeline to do a bunch of stuff such as building and running tests. Those tests uses docker. The image runs perfectly fine on the Jenkins Pipeline. I'm trying to connect to that images locally. I've followed the steps below:

1. docker-compose build
2. docker run -it container_name /bin/bash

After entering the container, I want to run the tests that use docker and getting the error below: connect ENOENT /var/run/docker.sock

Also, I tried running docker ps I'm getting this: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running? Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

Any suggestions for this?

Edit 1: my docker-compose.yml looks like:

version: '2.0'

services:
  build:
    build: .
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock"
    entrypoint: sh
    command: >
      sh -c "npm install"

Dockerfile:

FROM Imageeee

USER root

WORKDIR /app

COPY ./package*.json ./

RUN npm install

COPY ./ ./

RUN npm run build

Answer 1

TL;DR

docker run doesn't use the configuration defined in the docker-compose.yml spec. Not mounting the docker daemon socket, and without running the docker daemon inside the container, there is no docker daemon to connect to.

---

You can define your service configuration in YAML format:

version: '3.7'
services:
  build:
    image: docker:20.10.12-dind
    container_name: dind
    volumes:
      - '/var/run/docker.sock:/var/run/docker.sock'

... then use docker-compose run... to create a container

... or update the docker run command line, eg:

docker run --rm -it \
    --entrypoint docker \
    -v /var/run/docker.sock:/var/run/docker.sock \
    docker:20.10.12-dind ps