[FIXED] Docker - FROM requires either one or three arguments error from spyder

Issue

I struggle creating dockerfile in Spyder IDE.

FROM ubuntu:18.04
COPY . /app
RUN make /app
CMD python /app/app.py

This is a simple dockerfile from docker website.

When I run

docker build -t test .

I got

Error response from daemon: dockerfile parse error line 1: FROM requires either one or three arguments

Solution

The issue seems related to copy/paste into spyder.

I opened the file using vim and then i saw this (in only one line while it is presented in 4 lines in spyder)

FROM ubuntu:18.04^MCOPY . /app^MRUN make /app^MCMD python /app/app.py

Just remove the ^M and put each statement at a new line fix the problem

Answered By - Sylvain Lejamble