Added docker image

.gitignore

@@ -1,4 +1,4 @@
-search-api
+vendor
 bin
 tmp
 .vscode

Dockerfile

@@ -0,0 +1,19 @@
+FROM golang:alpine as builder
+
+WORKDIR /go/src/github.com/eko/pihole-exporter
+COPY . .
+
+RUN apk update && \
+    apk --no-cache add git alpine-sdk
+
+RUN GO111MODULE=on go mod vendor
+RUN GOOS=linux go build -o binary ./
+
+FROM alpine
+
+LABEL name="pihole-exporter"
+
+WORKDIR /root/
+COPY --from=builder /go/src/github.com/eko/pihole-exporter/binary pihole-exporter
+
+CMD ["./pihole-exporter"]

README.md

@@ -34,6 +34,15 @@ You can download the latest version of the binary built for your architecture he
     [Linux](https://github.com/eko/pihole-exporter/releases/latest/download/pihole_exporter-linux-arm)
 ]
 
+### Using Docker
+
+The exporter is also available as a [Docker image](https://hub.docker.com/r/ekofr/pihole-exporter).
+You can run it using the following example and pass configuration environment variables:
+
+```
+$ docker run -e 'PIHOLE_HOSTNAME=192.168.1.2' ekofr/pihole-exporter:latest
+```
+
 ### From sources
 
 Optionally, you can download and build it from the sources. You have to retrieve the project sources by using one of the following way:
@@ -43,6 +52,12 @@ $ go get -u github.com/eko/pihole-exporter
 $ git clone https://github.com/eko/pihole-exporter.git
 ```
 
+Install the needed vendors:
+
+```
+$ GO111MODULE=on go mod vendor
+```
+
 Then, build the binary (here, an example to run on Raspberry PI ARM architecture):
 ```bash
 $ GOOS=linux GOARCH=arm GOARM=7 go build -o pihole_exporter .