Merge remote-tracking branch 'arachnid/dockerize' into s/swarm-docker

containers/docker/swarm-alpine/Dockerfile

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+# Docker container spec for building the swarm branch of go-ethereum.
+#
+# The build process it potentially longer running but every effort was made to
+# produce a very minimalistic container that can be reused many times without
+# needing to constantly rebuild.
+FROM alpine:3.3
+
+# Build go-ethereum on the fly and delete all build tools afterwards
+RUN \
+  apk add --update go git make gcc musl-dev            && \
+  git clone https://github.com/ethersphere/go-ethereum && \
+  (cd go-ethereum && git checkout s/sworm-rc3-update)  && \
+  (cd go-ethereum && make geth)                        && \
+  cp go-ethereum/build/bin/geth /geth                  && \
+  apk del go git make gcc musl-dev                     && \
+  rm -rf /go-ethereum && rm -rf /var/cache/apk/*
+
+# Make sure bash and jq is available for easier wrapper implementation
+RUN apk add --update bash jq
+
+# Inject the startup script
+ADD swarm.sh /swarm.sh
+RUN chmod +x /swarm.sh
+
+# Export the usual networking ports to allow outside access to the node
+EXPOSE 8545 8546 30303
+
+ENTRYPOINT ["/swarm.sh"]

containers/docker/swarm-alpine/swarm.sh

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+#!/bin/bash
+
+# Startup script to initialize and boot a go-ethereum instance as a swarm node.
+#
+# This script assumes the following files:
+#  - `geth` binary is located in the filesystem root
+#  - `genesis.json` file is located in the filesystem root
+
+# Immediately abort the script on any error encountered
+set -e
+
+if [ "$SWARM_NETWORK_ID" = "" ]; then export SWARM_NETWORK_ID=322; fi
+
+if [ ! -f "/swarm/data/nodekey" ]; then
+    # First run
+    echo "Initializing swarm node..."
+    mkdir -p /swarm/data
+    mkdir -p /swarm/enodes
+    mkdir -p /swarm/pids
+    /geth --datadir=/swarm/data --password=<(echo -n) account new
+fi
+
+/geth   --dev \
+        --maxpeers=40 \
+        --shh=false \
+        --networkid=$SWARM_NETWORK_ID \
+        --bzznoswap \
+        --verbosity=6 \
+        --vmodule=swarm/*=5,discover=5 \
+        --datadir=/swarm/data \
+        --bzzaccount=0 \
+        --unlock=0 \
+        --port=30303 \
+        --bzzport=32200 \
+        --nat=none \
+        --rpc \
+        --rpcaddr="0.0.0.0" \
+        --rpccorsdomain="*" \
+        --password=<(echo -n) \
+        $*