Fix dockerfile

docker/web/Dockerfile

@@ -17,15 +17,12 @@ RUN set -ex \
         libpq-dev \
 		" \
     && apt-get update \
+    && apt-get upgrade -y \
     && apt-get install -y --no-install-recommends $buildDeps tmux postgresql-client \
     && pip install -U --no-cache-dir wheel setuptools pip \
     && pip install --no-cache-dir -r requirements.txt \
     && apt-get purge -y --auto-remove $buildDeps \
-    && rm -rf /var/lib/apt/lists/* \
-    && find /usr/local \
-        \( -type d -a -name test -o -name tests \) \
-        -o \( -type f -a -name '*.pyc' -o -name '*.pyo' \) \
-        -exec rm -rf '{}' +
+    && rm -rf /var/lib/apt/lists/*
 
 # /nginx mount point must be created before so it doesn't have root permissions
 # ${APP_HOME} root folder will not be updated by COPY --chown, so permissions need to be adjusted