chore: move docker folder to under /examples

edit Dockerfile
delete DEBIAN_FRONTEND argument

edit install.sh
System environment $REQUIRENMENTS_FILE_PATH was added
When the user sets $REQUIRENMENTS_FILE_PATH, the container tries to install it as a pip requirements file

Docker/Dockerfile → examples/docker/Dockerfile

@@ -1,17 +1,14 @@
 FROM python:3.8.4-slim
 ENV PYTHONIOENCODING UTF-8
-ARG DEBIAN_FRONTEND=noninteractive
-
-COPY ./config /config
-
 ENV CONFIG_FILE_PATH=/config/config.py
 ENV WORK_DIR=/work
+WORKDIR /work
 
+COPY config /config
 RUN chmod 777 /config/install.sh /config/start.sh /config/config.sh &&\
     pip3 install -r /config/async-requirements.txt &&\
     pip3 install -r /config/sync-requirements.txt &&\
     /config/install.sh
 
-WORKDIR /work
 ENTRYPOINT /config/start.sh
 

Docker/config/install.sh → examples/docker/config/install.sh

@@ -4,4 +4,8 @@ if [ -n "$FRAMEWORK_VERSION" ] && [ -n "$FRAMEWORK" ]; then
   pip3 install "$FRAMEWORK"=="$FRAMEWORK_VERSION"
 elif [ -n "$FRAMEWORK" ]; then
     pip3 install "$FRAMEWORK"
-fi
+fi
+
+if [ -n "$REQUIRENMENTS_FILE_PATH" ]; then
+  pip3 install -r "$REQUIRENMENTS_FILE_PATH"
+fi