Merge pull request #35 from iotaledger/feat/docker

Initial Docker support

.dockerignore

+# Database directory
+mainnetdb/

Dockerfile

+# we need to use alpine to build since cgo is required
+FROM golang:1.12-alpine AS build
+RUN apk add --no-cache git gcc g++
+
+# Set the current Working Directory inside the container
+RUN mkdir /goshimmer
+WORKDIR /goshimmer
+
+# Download dependencies
+COPY go.mod . 
+COPY go.sum .
+RUN go mod download
+
+# Copy everything from the current directory to the PWD(Present Working Directory) inside the container
+COPY . .
+
+# Build
+RUN CGO_ENABLED=1 GOOS=linux go build -o /go/bin/goshimmer
+
+FROM alpine:latest  
+
+RUN apk --no-cache add ca-certificates
+
+WORKDIR /root/
+
+VOLUME /root/mainnetdb
+
+EXPOSE 14666/tcp
+EXPOSE 14626/udp
+EXPOSE 14626/tcp
+
+# Copy the Pre-built binary file from the previous stage
+COPY --from=build /go/bin/goshimmer .
+
+ENTRYPOINT ["./goshimmer"] 

README.md

@@ -36,4 +36,21 @@ You can then run by:
 
 ```
 ./shimmer
-```
\ No newline at end of file
+```
+
+## Docker
+
+To run Shimmer on docker, you must first build the image with
+```
+docker build -t iotaledger/goshimmer .
+```
+and then run it with
+```
+docker run --rm -it -v target/mainnetdb:/root/mainnetdb iotaledger/goshimmer
+```
+You may replace `target/mainnetdb` with a custom path to the database folder.
+
+To start Shimmer in the background, you can also simply use [Docker Compose](https://docs.docker.com/compose/) by running
+```
+docker-compose up -d
+```

docker-compose.yml

+version: "3"
+
+services:
+
+  goshimmer:
+    image: iotaledger/goshimmer
+    container_name: iota_goshimmer
+    restart: unless-stopped
+    volumes:
+      - ./mainnetdb:/root/mainnetdb:rw
+    ports:
+      - "14666:14666/tcp"
+      - "14626:14626/udp"
+      - "14626:14262/tcp"
+    command: "-node-disable-plugins statusscreen"