Adding docker

.dockerignore

@@ -0,0 +1 @@
+latest-export.gz.bin

DOCKER.md

@@ -0,0 +1,37 @@
+# Quickstart
+
+## Clone
+To quickly build, first clone the repository
+
+```sh
+git clone https://github.com/gohornet/hornet && cd hornet
+```
+
+## Run build
+```sh
+docker build -t hornet:latest .
+```
+
+## Prepare
+
+i. Download the DB file
+```sh
+curl -LO https://dbfiles.iota.org/mainnet/hornet/latest-export.gz.bin
+```
+
+ii. Create a directory for the database. You can choose any path (perferably on a partition with enough disk space):
+```sh
+mkdir /tmp/db
+```
+(Note: In the example above we're using /tmp that will get wiped after a reboot)
+
+iii. Edit the `config.json` for neighbors and alternative ports if needed.
+
+
+## Run
+
+Best run on host network for better performance (otherwise you are going to have to publish ports, that is done via iptables NAT and is slower)
+```sh
+docker run --rm -v $(pwd)/config.json:/app/config.json:ro -v $(pwd)/latest-export.gz.bin:/app/latest-export.gz.bin:ro -v /tmp/db:/app/mainnetdb --name hornet --net=host hornet:latest
+```
+Use CTRL-c to gracefully end the process.

Dockerfile

@@ -0,0 +1,34 @@
+# ---[ build image ]---
+FROM golang:1.13 as builder
+
+WORKDIR /go/src/github.com/gohornet/hornet
+ADD . .
+RUN CGO_ENABLED=0 GOOS=linux go build -o ./hornet main.go
+
+# ---[ runtime image ]---
+FROM alpine:latest
+WORKDIR /app
+ENV TINI_VERSION v0.18.0
+
+# Tini is excellent: https://github.com/krallin/tini#why-tini
+ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini-static /tini
+ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini-static.asc /tini.asc
+
+COPY --from=builder ["/go/src/github.com/gohornet/hornet/hornet", "/go/src/github.com/gohornet/hornet/config.json", "/app/"]
+RUN apk --no-cache add ca-certificates gnupg\
+ && addgroup --gid 39999 hornet\
+ && adduser -h /app -s /bin/sh -G hornet -u 39999 -D hornet\
+ && chmod +x /tini /app/hornet\
+ && chown hornet:hornet -R /app\
+ && gpg --batch --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 595E85A6B1B4779EA4DAAEC70B588DFF0527A9B7\
+ && gpg --batch --verify /tini.asc /tini
+
+# Not exposing ports, as it might be more efficient to run this on host network because of performance gain.
+# | Host mode networking can be useful to optimize performance, and in situations where a container needs
+# | to handle a large range of ports, as it does not require network address translation (NAT), and no
+# | “userland-proxy” is created for each port.
+# Source: https://docs.docker.com/network/host/
+
+USER hornet
+ENTRYPOINT ["/tini", "--"]
+CMD ["/app/hornet"]

README.md

@@ -25,4 +25,8 @@ This way, HORNET is easier to install and runs on low-end devices.
 - Extract the files in a folder of your choice
 - Add neighbors to the config.json file
 - Download the latest HORNET snapshot from [dbfiles.iota.org](https://dbfiles.iota.org/mainnet/hornet/latest-export.gz.bin)
-- Run HORNET: `./hornet -c config`
+- Run HORNET: `./hornet -c config`
+
+### Docker
+
+See [Docker](DOCKER.md)