Don't install unnecessary packages in Dockerfile

Dockerfile

@@ -1,6 +1,4 @@
 FROM python:2-alpine
-MAINTAINER Jakub Warmuz <jakub@warmuz.org>
-MAINTAINER William Budington <bill@eff.org>
 
 EXPOSE 80 443
 VOLUME /etc/letsencrypt /var/lib/letsencrypt
@@ -9,11 +7,8 @@ ENTRYPOINT [ "certbot" ]
 COPY . src
 
 RUN apk add --no-cache --virtual .certbot-deps \
-        dialog \
-        augeas-libs \
         libffi \
         libssl1.0 \
-        wget \
         ca-certificates \
         binutils
 RUN apk add --no-cache --virtual .build-deps \
@@ -25,6 +20,4 @@ RUN apk add --no-cache --virtual .build-deps \
     && pip install --no-cache-dir \
         --editable /opt/certbot/src/acme \
         --editable /opt/certbot/src \
-        --editable /opt/certbot/src/certbot-apache \
-        --editable /opt/certbot/src/certbot-nginx \
     && apk del .build-deps