Pinning package versions in Dockerfile

Dockerfile

@@ -6,18 +6,24 @@ COPY frontend/ /frontend/
 WORKDIR /frontend
 ENV PUBLIC_PATH="/static/_nuxt/"
 
+# hadolint ignore=DL3018
 RUN apk add -U --no-cache git python3 make g++ \
-  && yarn install \
-  && yarn build \
-  && apk del --no-cache git make g++
+ && yarn install \
+ && yarn build \
+ && apk del --no-cache git make g++
 
 FROM python:${PYTHON_VERSION}-slim-buster AS backend-builder
 
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends netcat libpq-dev unixodbc-dev g++ && \
-    apt-get clean
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends \
+    netcat=1.10-41.1 \
+    libpq-dev=11.9-0+deb10u1 \
+    unixodbc-dev=2.3.6-0.1 \
+    g++=4:8.3.0-1 \
+ && apt-get clean
 
 COPY /app/requirements.txt /
+# hadolint ignore=DL3013
 RUN pip install --no-cache-dir -U pip \
  && pip install --no-cache-dir -r /requirements.txt \
  && pip wheel --no-cache-dir -r /requirements.txt -w /deps