Adding non root user

Author: souvik-deepsource

Dockerfile

@@ -3,15 +3,21 @@ ENV PYTHONPATH /app
 ENV PYTHONUNBUFFERED 1
 ENV PYTHONDONTWRITEBYTECODE 1
 
+RUN groupadd --gid 5000 main \
+    && useradd --home-dir /home/main --create-home --uid 5000 \
+        --gid 5000 --shell /bin/sh --skel /dev/null main
+
 COPY . /app
 WORKDIR /app
 
 # install curl; skipcq: DOK-DL3008
-RUN apt-get update && apt-get install -y curl git && apt-get clean && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install --no-install-recommends -y curl git && apt-get clean && rm -rf /var/lib/apt/lists/*
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
 # download the DeepSource CLI binary
 RUN curl https://deepsource.io/cli | bash
 RUN ["chmod", "777", "/app/main.py"]
 
+USER main
+
 CMD ["/app/main.py"]