fix: l2geth-exporter docker build (#2633)

Fixes the docker build for `l2geth-exporter`
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

l2geth-exporter/Dockerfile

@@ -3,6 +3,7 @@ FROM golang:1.18.0-alpine3.15 as builder
 COPY ./l2geth-exporter /app
 
 WORKDIR /app/
+RUN apk --no-cache add make jq bash git
 RUN make build
 
 FROM alpine:3.15