Changes from @decentral1se code review

Dockerfile

@@ -1,8 +1,17 @@
 FROM python:3.8-alpine as build
 
-RUN apk add gettext git gcc python3-dev musl-dev \
-    libffi-dev zlib-dev jpeg-dev libjpeg postgresql-dev build-base \
-    --virtual .build-dependencies
+RUN apk add --no-cache \
+    build-base \
+    gcc \
+    gettext \
+    git \
+    jpeg-dev \
+    libffi-dev \
+    libjpeg \
+    musl-dev \
+    postgresql-dev \
+    python3-dev \
+    zlib-dev
 
 RUN mkdir -p /app/{code,venv}
 WORKDIR /app/code
@@ -17,8 +26,14 @@ RUN pipenv install --deploy --verbose
 
 FROM python:3.8-alpine
 
-RUN apk add --no-cache libpq libstdc++ libjpeg virt-install libvirt-client \
-    cloud-utils openssh-client
+RUN apk add --no-cache \
+    cloud-utils \
+    libjpeg \
+    libpq \
+    libstdc++ \
+    libvirt-client \
+    openssh-client \
+    virt-install
 
 COPY . /app/code/
 WORKDIR /app/code