Dockerfile

FROM alpine:latest 
RUN apk update && apk add --no-cache curl
RUN echo "https://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories
RUN apk update && apk add --no-cache sing-box
RUN mkdir -p /etc/sing-box
RUN touch /etc/sing-box/config.json
RUN chmod 777 /etc/sing-box/config.json
#COPY main.py /etc/sing-box/main.py 
CMD echo $CONFIG_TXT > /etc/sing-box/config.json && sing-box run -c /etc/sing-box/config.json