ls la

total 76K
drwxr-xr-x  7 dokku dokku 4.0K Jun  2 11:05 .
drwxr-xr-x  6 dokku dokku 4.0K Jun  2 09:21 ..
drwxrwxr-x  2 dokku dokku 4.0K Jun  2 09:27 branches
-rw-rw-r--  1 dokku dokku    0 Jun  2 09:27 .build.lock
-rw-rw-r--  1 dokku dokku   66 Jun  2 09:27 config
-rw-rw-r--  1 dokku dokku   65 Jun  2 11:05 CONTAINER.web.1
-rw-rw-r--  1 dokku dokku   73 Jun  2 09:27 description
-rw-rw-r--  1 dokku dokku  186 Jun  2 11:05 DOCKERFILE_ENV_FILE
-rw-rw-r--  1 dokku dokku    6 Jun  2 09:30 DOKKU_SCALE
-rw-------  1 dokku dokku  240 Jun  2 10:48 ENV
-rw-rw-r--  1 dokku dokku   23 Jun  2 09:27 HEAD
drwxrwxr-x  2 dokku dokku 4.0K Jun  2 09:27 hooks
drwxrwxr-x  2 dokku dokku 4.0K Jun  2 09:27 info
-rw-rw-r--  1 dokku dokku   11 Jun  2 11:05 IP.web.1
-rw-------  1 dokku dokku 1.1K Jun  2 11:05 nginx.conf
drwxrwxr-x 32 dokku dokku 4.0K Jun  2 11:04 objects
-rw-rw-r--  1 dokku dokku    5 Jun  2 11:05 PORT.web.1
drwxrwxr-x  4 dokku dokku 4.0K Jun  2 09:27 refs
-rw-r--r--  1 dokku dokku  104 Jun  2 11:05 URLS
-rw-r--r--  1 dokku dokku   15 Jun  2 09:21 VHOST



Dockerfile

FROM phusion/baseimage:0.9.16

RUN apt-get update && \
    apt-get install -y \
        libgtk2.0-dev \
        libjasper-dev \
        libjpeg-dev \
        libpng-dev \
        libtiff-dev \
        python-dev \
        python-numpy \
        python-opencv \
        python-pip \
        python-pycurl \
        webp

RUN apt-get clean && \
    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

RUN pip install thumbor==5.2.1

COPY thumbor.conf thumbor.conf

CMD thumbor -p 8080 -c thumbor.conf



### I also tested EXPOSE 8080