Add note to containers deployment markdown on carriage returns and how to remove them #60

Similar to devops script markdown:

If you get an error with extra carriage return characters:

deploy.sh: line 2: $'\r': command not found
...
deploy.sh: line 34: syntax error near unexpected token $'in\r''' deploy.sh: line 34: case "${arg}" in
run the following command to remove the erroneous characters:

sed -i 's/\r//g' deploy.sh