Add Dockerfile

[nileshtrivedi]

Make it possible to run this app as a docker container. Take care to pick up configuration from environment variables so that it can be embedded in docker-compose setups.

It will then be possible to include this explorer in the standard puppeth tool which comes with geth. See this tweet by Péter Szilágyi and the replies: https://twitter.com/peter_szilagyi/status/965553294323126272

puppeth is used mostly for deploying private network names, so it might also be a good idea to NOT hard-code the native currency name to "Ether" and instead pick it up from run-time config.

[Alaradia]

it already is possible to run it as a docker container just nobody has done it.

[saniales]

can you show us how? @Alaradia

[jotorren]

Try:

Dockerfile

FROM node:8.10.0

RUN git clone https://github.com/carsenk/explorer

WORKDIR /explorer

RUN sed 's/-a localhost -p 8000/-a 0.0.0.0 -p 8000/g' package.json > pkg.json
RUN rm -f package.json
RUN mv pkg.json package.json

RUN npm install
RUN node_modules/.bin/bower install --allow-root

COPY startscript.sh .

RUN adduser --disabled-password --gid 0 --gecos "EthereumExplorerV2 user" ethexplorer
RUN chown -R ethexplorer. /explorer

EXPOSE 8000

USER ethexplorer
RUN chown ethexplorer:root /home/ethexplorer && chmod 0775 /home/ethexplorer
ENV HOME /home/ethexplorer
RUN chmod -R g+w /explorer
ENTRYPOINT ["/explorer/startscript.sh"]

startscript.sh:

#!/bin/sh

sed "s/var GETH_HOSTNAME\t= \"localhost\";/var GETH_HOSTNAME\t= \"$GETH_HOSTNAME\";/g" /explorer/app/app.js > /explorer/app/apptmp.js
sed "s/var GETH_RPCPORT  \t= 8545;/var GETH_RPCPORT  \t= $GETH_RPCPORT;/g" /explorer/app/apptmp.js > /explorer/app/app.js
rm -f /explorer/app/apptmp.js
npm start

You can build the docker image running (from the directory containing the Dockerfile):

# docker build -t blockchain/eth-explorer .

# docker images
REPOSITORY                            TAG                 IMAGE ID            CREATED             SIZE
blockchain/eth-explorer               latest              10c97739e654        About an hour ago   1.084 GB

And finally start a container giving it, as environment variables, Ethereum node IP and port:

# docker run -e GETH_HOSTNAME=192.168.99.100 -e GETH_RPCPORT=32001 -p 8000:8000 -t blockchain/eth-explorer