adding dockerfile with cfs & onair dependencies

Dockerfile

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+FROM ubuntu:20.04
+
+ARG DEBIAN_FRONTEND=noninteractive
+ENV TZ=America/New_York
+
+RUN \
+    apt-get update && \
+    apt-get -y upgrade
+
+# cFS dependencies
+RUN \
+    apt-get install sudo && \
+    apt-get install -y build-essential && \
+    apt-get install -y gcc && \ 
+    apt-get install -y git && \
+    apt-get install -y cmake && \
+    apt-get install -y xterm && \
+    apt-get install -y python2 && \
+    apt-get install -y lcov && \
+    apt-get install -y xxd && \
+    apt-get install -y zlib1g-dev
+
+# OnAIR dependencies
+
+RUN \
+    apt-get install -y python3.9 && \
+    apt-get install -y python3.9-dev && \
+    apt-get install -y python3-pip
+
+RUN pip install \
+    coverage==6.5.0 \
+    numpy==1.23.4 \
+    pytest==7.2.0 \
+    pytest-mock==3.10.0 \ 
+    pytest-randomly==3.12.0 \
+    redis==4.6.0
+
+# New packages go here to prevent re-running instructions when re buildingCOPY apps/onair_app/onair/requirements_pip.txt requirements.txt
+
+RUN \
+    apt-get update && \
+    apt-get -y upgrade && \ 
+    rm -rf /var/lib/apt/lists/*
+

docker-compose.yml

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+version: '3'
+
+services:
+
+  cfs-onair:
+    container_name: cfs-onair
+    volumes:
+      - "./:/cFS-fsw"
+    working_dir: "/cFS-fsw"
+    build:
+      context: .
+    stdin_open: true
+    tty: true
+    privileged: true