Update image to Python3 and Ubuntu 18.04

Dockerfile

@@ -1,14 +1,29 @@
+
+
 FROM ubuntu:18.04
 MAINTAINER Rick Torzynski "[email protected]"
-RUN apt-get update -y
-RUN apt-get install -y python-pip python-dev build-essential
-RUN apt update && apt install -y libsm6 libxext6
-RUN apt-get -y install tesseract-ocr
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update \
+  && apt-get -y install tesseract-ocr \
+  && apt-get install -y python3 python3-distutils python3-pip \
+  && cd /usr/local/bin \
+  && ln -s /usr/bin/python3 python \
+  && pip3 --no-cache-dir install --upgrade pip \
+  && rm -rf /var/lib/apt/lists/*
+
+
+RUN apt update \
+  && apt-get install ffmpeg libsm6 libxext6 -y
+RUN pip3 install pytesseract
+RUN pip3 install opencv-python
+RUN pip3 install pillow
+
 COPY . /app
 WORKDIR /app
-RUN pip install pillow
-RUN pip install pytesseract
-RUN pip install opencv-contrib-python
+
+
 RUN pip install -r requirements.txt
-ENTRYPOINT ["python"]
-CMD ["app.py"]
+ENTRYPOINT ["python3"]
+CMD ["app.py"]

app.py

@@ -58,4 +58,6 @@ def upload_file():
       return render_template("uploaded.html", displaytext=text, fname=filename)
 
 if __name__ == '__main__':
-   app.run(host="0.0.0.0", port=5000, debug=True)
+  port = int(os.environ.get('PORT', 5000))
+  app.run(debug=True, host='0.0.0.0', port=port)
+  # app.run(host="0.0.0.0", port=5000, debug=True)

requirements.txt

@@ -6,7 +6,7 @@ itsdangerous==1.1.0
 Jinja2>=2.10.1
 MarkupSafe==1.1.0
 numpy==1.15.4
-opencv-contrib-python==4.2.0.32
+opencv-python>=4.0
 pillow>=6.2.0
-pytesseract==0.2.6
+pytesseract>=0.2.6
 werkzeug==0.15.3