create dockerfile and docker-compose.yml to make setting up pytest easy

docker-compose.yml

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+version: '3.7'
+
+services:
+  seedsigner-dev:
+    build:
+      context: .
+      dockerfile: docker/Dockerfile
+    command: sh -c 'bash -c "tail -f /dev/null"'
+    volumes:
+      # map the outside directory to /code inside the container
+       - ../seedsigner:/seedsigner
+    #ports:
+	  # enable ssh outside the container
+	  # - 22:22

docker/Dockerfile

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+FROM python:3.10-bullseye
+
+# install zbar dependencyy
+RUN apt-get -qq update
+RUN apt-get -y -qq install zbar-tools
+
+# temp add/copy seedsigner local repo to do pip3 install
+ADD . /seedsigner
+WORKDIR /seedsigner
+
+#COPY ../requirements.txt /requirements.txt
+#COPY ../tests/requirements.txt /tests-requirements.txt
+
+RUN pip3 install -r requirements.txt
+RUN pip3 install -r tests/requirements.txt
+RUN pip3 install -e .
+
+# clean up copied files
+WORKDIR /
+RUN rm -r /seedsigner
+
+# set working dir
+WORKDIR /seedsigner