Docker optimisation (#74)

* optimised docker image.

* bump version

Co-authored-by: Peter Dwyer <peter.dwyer@clanwilliamhealth.com>

Dockerfile

@@ -1,38 +1,36 @@
-FROM python:3
+FROM python:3.10-slim-bullseye
 
 ENV PYTHONFAULTHANDLER=1 \
     PYTHONHASHSEED=random \
     PYTHONUNBUFFERED=1 \
-    PYTHONDONTWRITEBYTECODE=1
+    PYTHONDONTWRITEBYTECODE=1 \
+    PIP_DEFAULT_TIMEOUT=100 \
+    PIP_DISABLE_PIP_VERSION_CHECK=1 \
+    PIP_NO_CACHE_DIR=1
 
 RUN mkdir /src
 RUN mkdir /static
 
 WORKDIR /src
 
-ENV PIP_DEFAULT_TIMEOUT=100 \
-    PIP_DISABLE_PIP_VERSION_CHECK=1 \
-    PIP_NO_CACHE_DIR=1
-
-RUN apt update
-RUN apt install -y software-properties-common
-RUN apt-add-repository non-free
-RUN apt update
-
-COPY requirements.txt /src
-
 COPY . /src/
 
-RUN apt install -y npm cron unrar \
+
+RUN apt update \
+    && apt install -y software-properties-common \
+    && apt-add-repository non-free \
+    && apt update \
+    && apt install -y npm cron unrar libmariadb-dev libpq-dev \
     && pip install --upgrade pip \
     && pip install -r requirements.txt \
     && cd frontend \
     && npm install \
     && npm run build \
+    && apt remove -y npm software-properties-common \
     && rm -r node_modules \
-    && apt -y auto-remove
-
-WORKDIR /src
+    && apt -y auto-remove \
+    && apt clean \
+    && rm -rf /var/lib/apt/lists/*
 
 RUN cat /src/cbreader/crontab >> /etc/cron.daily/cbreader