Better python dockerizing

See: https://pythonspeed.com/articles/dockerizing-python-is-hard/

Author: jkroepke

Dockerfile

@@ -1,13 +1,13 @@
-FROM python:3-alpine
+FROM python:3.7-alpine
 WORKDIR /src/
 
-COPY requirements.txt ./
+COPY requirements.txt /tmp/
 
 RUN apk add -t .build --no-cache postgresql-dev gcc musl-dev \
-    && pip install --no-cache-dir -r requirements.txt \
+    && pip install --no-cache-dir -r /tmp/requirements.txt \
     && apk del --no-cache .build
 
-COPY . .
+COPY handlers.py .
 
 USER 1001
 

requirements.txt

@@ -1,4 +1,27 @@
-kopf
-psycopg2
-kubernetes
-PyYAML
+aiohttp==3.5.4
+aiojobs==0.2.2
+async-timeout==3.0.1
+attrs==19.1.0
+cachetools==3.1.1
+certifi==2019.3.9
+chardet==3.0.4
+Click==7.0
+google-auth==1.6.3
+idna==2.8
+iso8601==0.1.12
+kopf==0.14
+kubernetes==9.0.0
+multidict==4.5.2
+oauthlib==3.0.1
+psycopg2-binary==2.8.2
+pyasn1==0.4.5
+pyasn1-modules==0.2.5
+python-dateutil==2.8.0
+PyYAML==5.1
+requests==2.22.0
+requests-oauthlib==1.2.0
+rsa==4.0
+six==1.12.0
+urllib3==1.25.3
+websocket-client==0.56.0
+yarl==1.3.0