Dockerfile

@@ -1,38 +1,26 @@
-FROM alpine:3.14
+FROM python:3-slim
 
 # Set working space
 WORKDIR /usr/src/app
 
 # Install dependencies
-RUN apk update --no-cache \
-    # Install packages
-    && apk add --no-cache \
-        tzdata \
-        python3 py3-pip py3-numpy py3-pandas py3-matplotlib \
-        wkhtmltopdf \
+RUN apt-get update \
+    # Prevent endless waiting
+    && DEBIAN_FRONTEND=noninteractive \
     # Set UTC as timezone
     && ln -snf /usr/share/zoneinfo/Europe/Rome /etc/localtime \
+    # Install APT packages
+    && apt-get install -y --fix-missing wkhtmltopdf gfortran \
     # Remove tmp files
-    && rm -rf /tmp/* /var/tmp/* \
+    && apt-get clean && rm -rf /tmp/* /var/tmp/* \
+    # Add PiWheels support
+    && echo "[global]\nextra-index-url=https://www.piwheels.org/simple" >> /etc/pip.conf \
     # Upgrade PIP 
     && python3 -m pip install --no-cache-dir --upgrade pip
 
-# Copy PIP extra index URLs
-COPY pip.conf .
-
-# Copy requirements
+# Copy and install requirements
 COPY requirements.txt .
-
-# Install requirements
-RUN apk update --no-cache \
-    # Install tmp packages 
-    && apk add --no-cache --virtual build-deps gcc python3-dev musl-dev build-base freetype-dev libpng-dev openblas-dev \
-    # Add PIP extra index URLs
-    && mv pip.conf /etc/pip.conf \
-    # Install PIP packages
-    && python3 -m pip install --no-cache-dir -r requirements.txt \
-    # Delete tmp packages
-    && apk del build-deps
+RUN python3 -m pip install -r requirements.txt
 
 # Copy app
 COPY . .

pip.conf

@@ -1,5 +0,0 @@
-[global]
-index-url = https://alpine-wheels.github.io/index
-extra-index-url = https://pypi.python.org/simple
-                  https://pypi.org/simple
-                  https://www.piwheels.org/simple