Added python3 installation step to relay Dockerfile
Without python3 installation the build fails on step 11/16:
RUN cd /go/src/github.com/keep-network/tbtc/relay/solidity && npm install
with node-gyp complaining about not python installation not existing.
@@ -10,6 +10,7 @@ ENV GOPATH=/go \
APP_NAME=relay \
APP_DIR=/go/src/github.com/keep-network/tbtc/relay \
BIN_PATH=/usr/local/bin \
+ LD_LIBRARY_PATH=/usr/local/lib/ \
GO111MODULE=on
RUN apk add --update --no-cache \
@@ -18,6 +19,7 @@ RUN apk add --update --no-cache \
make \
nodejs \
npm \
+ python3 \
git && \
rm -rf /var/cache/apk/ && mkdir /var/cache/apk/ && \
rm -rf /usr/share/man
