Docker for noobs

Source

Create your Dockerfile

FROM debian:jessie
# Replace shell with bash so we can source files
RUN rm /bin/sh && ln -s /bin/bash /bin/sh
# Set environment variables
ENV appDir /var/www/app/current
# Run updates and install deps
RUN apt-get update
RUN apt-get install -y -q --no-install-recommends \
    apt-transport-https \
    build-essential \
    ca-certificates \
    curl \
    g++ \
    gcc \
    git \
    make \
    nginx \
    sudo \
    wget \
    && rm -rf /var/lib/apt/lists/* \
    && apt-get -y autoclean
ENV NVM_DIR /usr/local/nvm
ENV NODE_VERSION 6.9.1
# Install nvm with node and npm
RUN curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.29.0/install.sh | bash \
    && source $NVM_DIR/nvm.sh \
    && nvm install $NODE_VERSION \
    && nvm alias default $NODE_VERSION \
    && nvm use default
# Set up our PATH correctly so we don't have to long-reference npm, node, &c.
ENV NODE_PATH $NVM_DIR/versions/node/v$NODE_VERSION/lib/node_modules
ENV PATH      $NVM_DIR/versions/node/v$NODE_VERSION/bin:$PATH
# Set the work directory
RUN mkdir -p /var/www/app/current
WORKDIR ${appDir}
# Add our package.json and install *before* adding our application files
ADD package.json ./
RUN npm i --production
# Install pm2 so we can run our application
RUN npm i -g pm2
# Add application files
ADD . /var/www/app/current
#Expose the port
EXPOSE 1245
CMD ["pm2", "start", "process.yml", "--no-daemon"]

Run Docker and VirtualBox host

docker-machine start default

eval "$(docker-machine env default)"

docker build -t jbernier/node-web-app .

docker run -p 49160:1245 -d jbernier/node-web-app

curl localhost:49160

Useful commands:

docker images

docker ps

docker logs <CONTAINER_ID>

docker exec -it <container id> /bin/bash    # Enter Container