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I’m just getting started, following the directions as per this page:
I’m using a dell studio laptop, running linux mint 18.3.
docker version 1.13.1
when I give the command: docker run -p 4000:80 friendlyhello; I get this error message:
josh@oem-Studio-1537 ~ $ docker build -t friendlyhello
"docker build" requires exactly 1 argument(s).
See ‘docker build --help’.
Usage: docker build [OPTIONS] PATH | URL | -
Build an image from a Dockerfile
… help??
there are two steps
docker build -t friendlyhello .
and then
docker run -p 4000:80 friendlyhello
yes but how to get past that first error message? build an image from a docker file? which file where
note that the docker build has a DOT (.) at the end, which means from HERE
i cut/pasted from the link you referenced
docker build looks for the file ‘Dockerfile’ in the folder referenced by the last parameter
at the end of the friendlyhello?
just tried that here is the output:
sudo docker build -t friendlyhello.
[sudo] password for josh:
invalid argument “friendlyhello.” for t: Error parsing reference: “friendlyhello.” is not a valid repository/tag: invalid reference format
See ‘docker build --help’.
cut/paste from the doc
needs to be a SPACE before the dot
sudo docker build -t friendlyhello .
Sending build context to Docker daemon 3.072 kB
Error response from daemon: Unknown instruction: E
when I do the command without sudo:
docker build -t friendlyhello .
Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.26/build?buildargs=%7B%7D&cachefrom=%5B%5D&cgroupparent=&cpuperiod=0&cpuquota=0&cpusetcpus=&cpusetmems=&cpushares=0&dockerfile=Dockerfile&labels=%7B%7D&memory=0&memswap=0&networkmode=default&rm=1&shmsize=0&t=friendlyhello&ulimits=null: dial unix /var/run/docker.sock: connect: permission denied
now we need to see the dockerfile
e an official Python runtime as a parent image
FROM python:2.7-slim
WORKDIR /app
ADD . /app
RUN pip install --trusted-host pypi.python.org -r requirements.txt
EXPOSE 80
ENV NAME World
CMD [“python”, “app.py”]
~### this is what I copy and pasted into the Dockerfile. as per instructions on the same page
uh… maybe cut/paste error?
# Use an official Python runtime as a parent image
FROM python:2.7-slim
er? what do you mean sorry ohhhh wait
the 1st line of your dockerfile starts 'e an official’
but the documentation is different… as I posted
new paste
WORKDIR /app
ADD . /app
RUN pip install --trusted-host pypi.python.org -r requirements.txt
EXPOSE 80
ENV NAME World
CMD [“python”, “app.py”]
an official Python runtime as a parent image
FROM python:2.7-slim
WORKDIR /app
ADD . /app
RUN pip install --trusted-host pypi.python.org -r requirements.txt
EXPOSE 80
ENV NAME World
CMD [“python”, “app.py”]
– INSERT –
and when u run docker build now?
ok getting the same permission denied message
docker build -t friendlyhello .
Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.26/build?buildargs=%7B%7D&cachefrom=%5B%5D&cgroupparent=&cpuperiod=0&cpuquota=0&cpusetcpus=&cpusetmems=&cpushares=0&dockerfile=Dockerfile&labels=%7B%7D&memory=0&memswap=0&networkmode=default&rm=1&shmsize=0&t=friendlyhello&ulimits=null: dial unix /var/run/docker.sock: connect: permission denied
that is without sudo (required unless u are root or added to the docker group…)
and u deleted the ‘from…’ line in the dockerfile… need that
how come you can’t cut/paste exactly what is provided?
ahh I should use sudo, how do I add my name to the docker group?
use google to search for that
sudo docker build _t friendlyhello .
“docker build” requires exactly 1 argument(s).
See ‘docker build --help’.
Usage: docker build [OPTIONS] PATH | URL | -
Build an image from a Dockerfile
now you used _t… come on…