FROM alpine:3.13.1

# > All command-line options (except for '-datadir' and '-conf') may be specified in a configuration file
ENV DATA_DIR_PATH=/var/lib/bitcoin
ARG BITCOIN_QT_PACKAGE_VERSION=0.20.1-r1
ARG TTF_OPENSANS_PACKAGE_VERSION=1.10-r1
ARG USER=bitcoin
RUN apk add --no-cache \
        bitcoin-qt=$BITCOIN_QT_PACKAGE_VERSION \
        ttf-opensans=$TTF_OPENSANS_PACKAGE_VERSION \
    && adduser -h "$DATA_DIR_PATH" -u 100 -S $USER
VOLUME $DATA_DIR_PATH

USER $USER
EXPOSE 8333/tcp
CMD ["sh", "-c", "exec bitcoin-qt -datadir=\"$DATA_DIR_PATH\" -printtoconsole"]