Dockerfile refactor to avoid layer creation (ADD . $APP_HOME) before requirements installation.

Author: Hugo Camino

Dockerfile

@@ -7,16 +7,18 @@ RUN ln -s /usr/include/locale.h /usr/include/xlocale.h
 ENV PYTHONUNBUFFERED=1 ENVIRONMENT=pre APP_HOME=/microservice/
 ENV DATABASE_DIR=database
 ENV CONFIGMAP_FILE="$APP_HOME"config-docker.yml
-RUN mkdir $APP_HOME && adduser -S -D -H python
 
+RUN mkdir $APP_HOME && adduser -S -D -H python
 RUN chown -R python $APP_HOME
 WORKDIR $APP_HOME
+
+ADD requirement*.txt $APP_HOME
+RUN pip install --upgrade pip
+RUN pip install -r requirements-docker.txt
+
 ADD . $APP_HOME
 RUN mkdir $DATABASE_DIR
 RUN chmod 777 $DATABASE_DIR
-RUN ls -lah
-RUN pip install --upgrade pip
-RUN pip install -r requirements-docker.txt
 
 EXPOSE 5000
 USER python