add devcontainer stuff from telegram bot

.devcontainer/Dockerfile

@@ -0,0 +1,24 @@
+FROM python:3.9-buster AS builder
+
+
+COPY requirements.txt /requirements.txt
+RUN pip install --user -r requirements.txt
+
+
+FROM python:3.9-slim
+
+ENV MPLBACKEND=Agg
+
+COPY --from=builder /root/.local /root/.local
+
+# Formatting
+RUN pip install --no-cache-dir black
+# Jupyter Notebooks
+RUN pip install --no-cache-dir ipykernel
+
+ENV DISCORD=TOKEN
+ENV IEX=TOKEN
+
+COPY . .
+
+# CMD [ "python", "./bot.py" ]