Simplify dockerfile.

Dockerfile

@@ -1,31 +1,4 @@
-ARG BASE_IMAGE="python:3.8-slim-buster"
-
-FROM $BASE_IMAGE
-ARG DIST_PATH
-
-RUN printf "deb http://deb.debian.org/debian buster-backports main" > /etc/apt/sources.list.d/backports_git.list && \
-    apt-get update \
-    && apt-get dist-upgrade -y \
-    && apt-get install -y --no-install-recommends \
-    git-man/buster-backports \
-    git/buster-backports \
-    ssh-client \
-    software-properties-common \
-    make \
-    build-essential \
-    ca-certificates \
-    libpq-dev \
-    && apt-get clean \
-    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
-
-# Install dbt and dbt-coves
-RUN pip install -U pip && \
-    pip install dbt-coves==0.19.1-a.8
-
-ENV PYTHONIOENCODING=utf-8
-ENV LANG C.UTF-8
-WORKDIR /usr/app
-VOLUME /usr/app
+FROM datacoves/dbt-coves
 
 COPY entrypoint.sh /entrypoint.sh
 ENTRYPOINT [ "/entrypoint.sh" ]