Optimize docker build

Author: artemskriabin

Dockerfile

@@ -1,14 +1,14 @@
 FROM golang:1.22.0-alpine as buildbase
 
-ARG CI_JOB_TOKEN
-
 RUN apk add git build-base ca-certificates
+
 WORKDIR /go/src/github.com/rarimo/proof-verification-relayer
-COPY . .
 
-RUN git config --global url."https://gitlab-ci-token:${CI_JOB_TOKEN}@gitlab.com".insteadOf https://gitlab.com
-RUN git config --global url."https://${CI_JOB_TOKEN}@github.com/".insteadOf https://github.com/
-RUN go env -w GOPRIVATE=github.com/*,gitlab.com/*
+COPY go.mod .
+COPY go.sum .
+RUN go mod download
+
+COPY . .
 
 RUN go mod tidy && go mod vendor
 RUN CGO_ENABLED=1 GO111MODULE=on GOOS=linux go build  -o /usr/local/bin/proof-verification-relayer /go/src/github.com/rarimo/proof-verification-relayer
@@ -21,4 +21,4 @@ COPY --from=alpine:3.9 /lib /lib
 COPY --from=buildbase /usr/local/bin/proof-verification-relayer /usr/local/bin/proof-verification-relayer
 COPY --from=buildbase /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
 
-ENTRYPOINT ["proof-verification-relayer"]
+ENTRYPOINT ["proof-verification-relayer"]