FROM ubuntu:15.04
COPY . /app
RUN make /app
CMD python /app/app.py
use .dockerignore
===Working with Instructions===
sudo yum install git -y
mkdir docker_images
cd docker_images
mkdir weather-app
cd weather-app
git clone https://github.com/linuxacademy/content-weather-app.git src
vi Dockerfile
FROM node
LABEL org.label-schema.version=v1.1
RUN mkdir -p /var/node
ADD src/ /var/node
WORKDIR /var/node
RUN npm install
EXPOSE 3000
CMD ./bin/www
docker image build -t linuxacademy/weather-app:v1 .
docker image ls
docker container run -d --name weather-app1 -p 8081:3000 linuxacademy/weather-app:v1
docker container ls
curl localhost:8081
===Environment Variables===
cd docker_images
mkdir env
cd env
git clone https://github.com/linuxacademy/content-weather-app.git src
vi Dockerfile
FROM node
LABEL org.label-schema.version=v1.1
ENV NODE_ENV="development"
ENV PORT 3000
RUN mkdir -p /var/node
ADD src/ /var/node/
WORKDIR /var/node
RUN npm install
EXPOSE $PORT
CMD ./bin/www
docker image build -t linuxacademy/weather-app:v2 .
docker image ls
docker image inspect linuxacademy/weather-app:v2
docker container run -d --name weather-dev -p 8082:3001 --env PORT=3001 linuxacademy/weather-app:v2
docker container ls
curl localhost:8082
docker container inspect weather-dev
docker container run -d --name weather-app2 -p 8083:3001 --env PORT=3001 --env NODE_ENV=production linuxacademy/weather-app:v2
docker container inspect weather-app2
curl localhost:8083
docker container logs weather-app2
docker container run -d --name weather-prod -p 8084:3000 --env NODE_ENV=production linuxacademy/weather-app:v2
docker container logs weather-prod
curl localhost:8084
===Build Args===
cd docker_images
mkdir args
cd args
git clone https://github.com/linuxacademy/content-weather-app.git src
vi Dockerfile
FROM node
LABEL org.label-schema.version=v1.1
ARG SRC_DIR=/var/node
RUN mkdir -p $SRC_DIR
ADD src/ $SRC_DIR
WORKDIR $SRC_DIR
RUN npm install
EXPOSE 3000
CMD ./bin/www
docker image build -t linuxacademy/weather-app:v3 --build-arg SRC_DIR=/var/code .
docker image inspect linuxacademy/weather-app:v3 | grep WorkingDir
docker container run -d --name weather-app3 -p 8085:3000 linuxacademy/weather-app:v3
curl localhost:8085
===Working with Non-privileged User===
cd docker_images
mkdir non-privileged-user
cd non-privileged-user
vi Dockerfile
FROM centos:latest
RUN useradd -ms /bin/bash cloud_user
USER cloud_user
docker image build -t centos7/nonroot:v1 .
docker container run -it --name test-build centos7/nonroot:v1 /bin/bash
bash$ sudo su
bash$ su -
bash$ exit
docker container ls
docker container start test-build
docker container exec -u 0 -it test-build /bin/bash
bash$ whoami
bash$ exit
cd ~/docker_images
mkdir node-non-privileged-user
cd node-non-privileged-user
vi Dockerfile
FROM node
LABEL org.label-schema.version=v1.1
RUN useradd -ms /bin/bash node_user
USER node_user
ADD src/ /home/node_user
WORKDIR /home/node_user
RUN npm install
EXPOSE 3000
CMD ./bin/www
git clone https://github.com/linuxacademy/content-weather-app.git src
docker image build -t linuxacademy/weather-app-nonroot:v1 .
docker container run -d --name weather-app-nonroot -p 8086:3000 linuxacademy/weather-app-nonroot:v1
curl localhost:8086
===Order of Execution===
cd docker_images
mkdir centos-conf
cd centos-conf
vi Dockerfile
FROM centos:latest
RUN mkdir -p ~/new-dir1
RUN useradd -ms /bin/bash cloud_user
RUN mkdir -p /etc/myconf
RUN echo "Some config data" >> /etc/myconf/my.conf
USER cloud_user
RUN mkdir -p ~/new-dir2
docker image build -t centos7/myconf:v1 .
===Using the Volume Instruction===
cd docker_images
mkdir volumes
cd volumes
vi Dockerfile
FROM nginx:latest
VOLUME ["/usr/share/nginx/html/"]
docker image build -t linuxacademy/nginx:v1 .
docker container run -d --name nginx-volume linuxacademy/nginx:v1
docker container inspect nginx-volume
docker volume inspect volume-id
sudo ls -la /var/lib/docker/volumes/volume-id/_data
