Typical workflow for creating a Docker image and pushing the image to docker hub

docker-image.sh

"""simple Dockerfile
FROM alpine:3.1  # starter image (typical)
MAINTAINER <name> <email>
ADD hello /usr/bin/hello  # ADD <bin> <path-on-image>
ENTRYPOINT ["hello"]  # run hello app on startup
"""

# install GO
wget https://storage.googleapis.com/golang/go1.6.2.linux-amd64.tar.gz
rm -rf /usr/local/bin/go
sudo tar -C /usr/local -xzf go1.6.2.linux-amd64.tar.gz
export PATH=$PATH:/usr/local/go/bin
export GOPATH=~/go

# install git if not installed already
sudo apt-get install git-core

# get the app code
mkdir -p $GOPATH/src/github.com/udacity
cd $GOPATH/src/github.com/udacity
git clone https://github.com/udacity/ud615.git

# build a static binary of the monolith app
cd ud615/app/monolith
go get -u
go build --tags netgo --ldflags '-extldflags "-lm -lstdc++ -static"'
# the commands above did not work the first time; delete and reclone the repo and try again

# create a container for the app
# build the app container
sudo docker build -t monolith:1.0.0 .

# list the monolith image
sudo docker images monolith:1.0.0

# run the monolith container and get it's IP
sudo docker run -d monolith:1.0.0
sudo docker ps  # copy the container id
sudo docker inspect <container name or cid>  # copy the IP address
curl <the container IP>

# optional: set the container ids and IPs to variables
CID=$(sudo docker run -d monolith:1.0.0)
CIP=$(sudo docker inspect --format '{{ .NetworkSettings.IPAddress }}' ${CID})
curl $CIP