Update Dockerfile to alpine:edge and chromium v90

Dockerfile

@@ -1,18 +1,16 @@
-FROM python:3.7-alpine3.13
+FROM alpine:edge
 
 WORKDIR /workdir
 
 ADD requirements.txt /workdir/
 
-RUN echo "foobar"
-
-RUN echo "http://dl-4.alpinelinux.org/alpine/v3.13/main" >> /etc/apk/repositories && \
-    echo "http://dl-4.alpinelinux.org/alpine/v3.13/community" >> /etc/apk/repositories && \
-    apk update && \
-    apk --no-cache add chromium chromium-chromedriver python3-dev build-base git py3-lxml libxml2 libxml2-dev libxslt libxslt-dev libffi-dev openssl-dev cargo && \
-    pip3 install --upgrade pip && \
-    pip3 install -r requirements.txt && \
-    apk del python3-dev build-base
+RUN echo "http://dl-4.alpinelinux.org/alpine/edge/main" >> /etc/apk/repositories && \
+    echo "http://dl-4.alpinelinux.org/alpine/edge/community" >> /etc/apk/repositories && \
+    apk --update --no-cache add ca-certificates chromium chromium-chromedriver \
+          python3-dev py3-pip py3-lxml py3-cryptography \
+          build-base git libxml2 libxml2-dev libxslt libxslt-dev libffi-dev openssl-dev cargo && \
+    pip install -r requirements.txt && \
+    apk del build-base
 
 ADD cli.py /workdir/
 ADD manager /workdir/manager

requirements.txt

@@ -21,7 +21,6 @@ grpcio==1.37.1
 html-similarity==0.3.3
 httpretty==0.9.7
 idna==2.10
-lxml==4.6.3
 parsel==1.6.0
 protobuf==3.15.8
 pyasn1==0.4.8
@@ -36,7 +35,6 @@ responses==0.13.3
 rq==1.8.0
 rsa==4.7.2
 selenium==3.141.0
-six==1.16.0
 smmap==3.0.4
 smmap2==2.0.5
 soupsieve==2.2.1