Getting standard_init_linux.go:178: exec user process caused "exec format error"

[langerkunal]

When I am trying to build this rsvp app I am getting this

dockuser@Test-LPAR-Ubuntu:/rsvp_files$ sudo docker build --no-cache -t rsvp .
Sending build context to Docker daemon 14.85 kB
Step 1/10 : FROM teamcloudyuga/python:alpine
---> b0c552b8cf64
Step 2/10 : COPY . /usr/src/app
---> 497a21d01132
Removing intermediate container bec636845ac8
Step 3/10 : WORKDIR /usr/src/app
---> 3e00477ca6ea
Removing intermediate container 4a6b5abd2224
Step 4/10 : ENV LINK http://www.meetup.com/cloudyuga/
---> Running in eaeaf609f67c
---> 82124b40e12e
Removing intermediate container eaeaf609f67c
Step 5/10 : ENV TEXT1 CloudYuga
---> Running in 895779099a35
---> 33dbc082c94e
Removing intermediate container 895779099a35
Step 6/10 : ENV TEXT2 Garage RSVP!
---> Running in ce37f915cfc2
---> 68e5559e73bb
Removing intermediate container ce37f915cfc2
Step 7/10 : ENV LOGO https://raw.githubusercontent.com/cloudyuga/rsvpapp/master/static/cloudyuga.png
---> Running in b9490015d328
---> 72056c453f3e
Removing intermediate container b9490015d328
Step 8/10 : ENV COMPANY CloudYuga Technology Pvt. Ltd.
---> Running in 93b6d9a16e12
---> 83d07470a4e7
Removing intermediate container 93b6d9a16e12
Step 9/10 : RUN pip install -r requirements.txt
---> Running in 0d279152c6a9
standard_init_linux.go:178: exec user process caused "exec format error"
The command '/bin/sh -c pip install -r requirements.txt' returned a non-zero code: 1
dockuser@Test-LPAR-Ubuntu:/rsvp_files$

Content of Dockerfile as copied from webpage
dockuser@Test-LPAR-Ubuntu:/rsvp_files$ cat Dockerfile
FROM teamcloudyuga/python:alpine
COPY . /usr/src/app
WORKDIR /usr/src/app
ENV LINK http://www.meetup.com/cloudyuga/
ENV TEXT1 CloudYuga
ENV TEXT2 Garage RSVP!
ENV LOGO https://raw.githubusercontent.com/cloudyuga/rsvpapp/master/static/cloudyuga.png
ENV COMPANY CloudYuga Technology Pvt. Ltd.
RUN pip install -r requirements.txt
CMD python rsvp.py
dockuser@Test-LPAR-Ubuntu:/rsvp_files$