♻️ Add pip flag --no-cache-dir to reduce disk size used (#38)

docker-images/python2.7.dockerfile

@@ -6,7 +6,7 @@ LABEL maintainer="Sebastian Ramirez <[email protected]>"
 # Newer versions don't support Python 2.7 (Python 2.7 reached end of life long ago)
 # So for this tag just install whatever is available for Python 2.7, don't use
 # Dependabot's updated requirements
-RUN pip install meinheld gunicorn
+RUN pip install --no-cache-dir meinheld gunicorn
 
 COPY ./entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh

docker-images/python3.6-alpine3.8.dockerfile

@@ -5,7 +5,7 @@ LABEL maintainer="Sebastian Ramirez <[email protected]>"
 COPY requirements.txt /tmp/requirements.txt
 
 RUN apk add --no-cache --virtual .build-deps gcc libc-dev \
-    && pip install -r /tmp/requirements.txt \
+    && pip install --no-cache-dir -r /tmp/requirements.txt \
     && apk del .build-deps gcc libc-dev
 
 COPY ./entrypoint.sh /entrypoint.sh

docker-images/python3.6.dockerfile

@@ -3,7 +3,7 @@ FROM python:3.6
 LABEL maintainer="Sebastian Ramirez <[email protected]>"
 
 COPY requirements.txt /tmp/requirements.txt
-RUN pip install -r /tmp/requirements.txt
+RUN pip install --no-cache-dir -r /tmp/requirements.txt
 
 COPY ./entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh

docker-images/python3.7-alpine3.8.dockerfile

@@ -5,7 +5,7 @@ LABEL maintainer="Sebastian Ramirez <[email protected]>"
 COPY requirements.txt /tmp/requirements.txt
 
 RUN apk add --no-cache --virtual .build-deps gcc libc-dev \
-    && pip install -r /tmp/requirements.txt \
+    && pip install --no-cache-dir -r /tmp/requirements.txt \
     && apk del .build-deps gcc libc-dev
 
 COPY ./entrypoint.sh /entrypoint.sh

docker-images/python3.7.dockerfile

@@ -3,7 +3,7 @@ FROM python:3.7
 LABEL maintainer="Sebastian Ramirez <[email protected]>"
 
 COPY requirements.txt /tmp/requirements.txt
-RUN pip install -r /tmp/requirements.txt
+RUN pip install --no-cache-dir -r /tmp/requirements.txt
 
 COPY ./entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh

docker-images/python3.8-alpine3.11.dockerfile

@@ -5,7 +5,7 @@ LABEL maintainer="Sebastian Ramirez <[email protected]>"
 COPY requirements.txt /tmp/requirements.txt
 
 RUN apk add --no-cache --virtual .build-deps gcc libc-dev \
-    && pip install -r /tmp/requirements.txt \
+    && pip install --no-cache-dir -r /tmp/requirements.txt \
     && apk del .build-deps gcc libc-dev
 
 COPY ./entrypoint.sh /entrypoint.sh

docker-images/python3.8.dockerfile

@@ -3,7 +3,7 @@ FROM python:3.8
 LABEL maintainer="Sebastian Ramirez <[email protected]>"
 
 COPY requirements.txt /tmp/requirements.txt
-RUN pip install -r /tmp/requirements.txt
+RUN pip install --no-cache-dir -r /tmp/requirements.txt
 
 COPY ./entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh

docker-images/python3.9-alpine3.13.dockerfile

@@ -5,7 +5,7 @@ LABEL maintainer="Sebastian Ramirez <[email protected]>"
 COPY requirements.txt /tmp/requirements.txt
 
 RUN apk add --no-cache --virtual .build-deps gcc libc-dev \
-    && pip install -r /tmp/requirements.txt \
+    && pip install --no-cache-dir -r /tmp/requirements.txt \
     && apk del .build-deps gcc libc-dev
 
 COPY ./entrypoint.sh /entrypoint.sh

docker-images/python3.9.dockerfile

@@ -3,7 +3,7 @@ FROM python:3.9
 LABEL maintainer="Sebastian Ramirez <[email protected]>"
 
 COPY requirements.txt /tmp/requirements.txt
-RUN pip install -r /tmp/requirements.txt
+RUN pip install --no-cache-dir -r /tmp/requirements.txt
 
 COPY ./entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh