cmd/gerritbot: stop using gitlock, use go modules

Updates golang/go#26872

Change-Id: I7cf1bc512f7e4ab6592c1d645b95c7d135bd6c59
Reviewed-on: https://go-review.googlesource.com/c/build/+/176600
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
diff --git a/cmd/gerritbot/Dockerfile b/cmd/gerritbot/Dockerfile
index be89ba7..5acad1c 100644
--- a/cmd/gerritbot/Dockerfile
+++ b/cmd/gerritbot/Dockerfile
@@ -4,188 +4,36 @@
 
 FROM golang:latest as builder
 
+# Because alpine is used below... TODO: just use Debian below and re-enable this?
 ENV CGO_ENABLED=0
 
-# BEGIN deps (run `make update-deps` to update)
+ENV GO111MODULE=on
+ENV GOPROXY=https://proxy.golang.org
 
-# Repo cloud.google.com/go at c41d1f0 (2018-04-11)
-ENV REV=c41d1f0620c95e5a241910263809a53a5425af0d
-RUN go get -d cloud.google.com/go/compute/metadata `#and 7 other pkgs` &&\
-    (cd /go/src/cloud.google.com/go && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
+RUN mkdir /gocache
+ENV GOCACHE /gocache
 
-# Repo github.com/golang/protobuf at e09c5db (2018-03-28)
-ENV REV=e09c5db296004fbe3f74490e84dcd62c3c5ddb1b
-RUN go get -d github.com/golang/protobuf/proto `#and 6 other pkgs` &&\
-    (cd /go/src/github.com/golang/protobuf && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
+COPY go.mod /go/src/golang.org/x/build/go.mod
+COPY go.sum /go/src/golang.org/x/build/go.sum
 
-# Repo github.com/google/go-github at 60131d1 (2018-03-29)
-ENV REV=60131d157172230b327fee58845dfcae3dee57b4
-RUN go get -d github.com/google/go-github/github &&\
-    (cd /go/src/github.com/google/go-github && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
+WORKDIR /go/src/golang.org/x/build
 
-# Repo github.com/google/go-querystring at 53e6ce1 (2017-01-11)
-ENV REV=53e6ce116135b80d037921a7fdd5138cf32d7a8a
-RUN go get -d github.com/google/go-querystring/query &&\
-    (cd /go/src/github.com/google/go-querystring && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
-
-# Repo github.com/googleapis/gax-go at de2cc08 (2018-03-29)
-ENV REV=de2cc08e690b99dd3f7d19937d80d3d54e04682f
-RUN go get -d github.com/googleapis/gax-go &&\
-    (cd /go/src/github.com/googleapis/gax-go && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
-
-# Repo github.com/gregjones/httpcache at 2bcd89a (2017-11-19)
-ENV REV=2bcd89a1743fd4b373f7370ce8ddc14dfbd18229
-RUN go get -d github.com/gregjones/httpcache &&\
-    (cd /go/src/github.com/gregjones/httpcache && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
-
-# Repo go.opencensus.io at 5710257 (2018-04-10)
-ENV REV=5710257e78ab540a7c6f0e203009abea60eb97b7
-RUN go get -d go.opencensus.io/exporter/stackdriver/propagation `#and 12 other pkgs` &&\
-    (cd /go/src/go.opencensus.io && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
-
-# Repo go4.org at fba789b (2018-01-03)
-ENV REV=fba789b7e39ba524b9e60c45c37a50fae63a2a09
-RUN go get -d go4.org/types &&\
-    (cd /go/src/go4.org && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
-
-# Repo golang.org/x/crypto at d644981 (2018-04-11)
-ENV REV=d6449816ce06963d9d136eee5a56fca5b0616e7e
-RUN go get -d golang.org/x/crypto/acme `#and 2 other pkgs` &&\
-    (cd /go/src/golang.org/x/crypto && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
-
-# Repo golang.org/x/net at 61147c4 (2018-04-06)
-ENV REV=61147c48b25b599e5b561d2e9c4f3e1ef489ca41
-RUN go get -d golang.org/x/net/context `#and 8 other pkgs` &&\
-    (cd /go/src/golang.org/x/net && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
-
-# Repo golang.org/x/oauth2 at 921ae39 (2018-04-02)
-ENV REV=921ae394b9430ed4fb549668d7b087601bd60a81
-RUN go get -d golang.org/x/oauth2 `#and 5 other pkgs` &&\
-    (cd /go/src/golang.org/x/oauth2 && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
-
-# Repo golang.org/x/sync at 1d60e46 (2018-03-14)
-ENV REV=1d60e4601c6fd243af51cc01ddf169918a5407ca
-RUN go get -d golang.org/x/sync/errgroup &&\
-    (cd /go/src/golang.org/x/sync && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
-
-# Repo golang.org/x/text at 7922cc4 (2018-04-10)
-ENV REV=7922cc490dd5a7dbaa7fd5d6196b49db59ac042f
-RUN go get -d golang.org/x/text/secure/bidirule `#and 4 other pkgs` &&\
-    (cd /go/src/golang.org/x/text && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
-
-# Repo golang.org/x/time at 6dc1736 (2017-09-27)
-ENV REV=6dc17368e09b0e8634d71cac8168d853e869a0c7
-RUN go get -d golang.org/x/time/rate &&\
-    (cd /go/src/golang.org/x/time && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
-
-# Repo google.golang.org/api at 9f7560f (2018-04-10)
-ENV REV=9f7560f3b05bd90f33f9d56a449e5afd4dab15b3
-RUN go get -d google.golang.org/api/gensupport `#and 9 other pkgs` &&\
-    (cd /go/src/google.golang.org/api && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
-
-# Repo google.golang.org/genproto at 51d0944 (2018-04-09)
-ENV REV=51d0944304c3cbce4afe9e5247e21100037bff78
-RUN go get -d google.golang.org/genproto/googleapis/api/annotations `#and 4 other pkgs` &&\
-    (cd /go/src/google.golang.org/genproto && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
-
-# Repo google.golang.org/grpc at 858463a (2018-04-10)
-ENV REV=858463ac273fd87e6b2343eda6e96ed3a91e3b20
-RUN go get -d google.golang.org/grpc `#and 24 other pkgs` &&\
-    (cd /go/src/google.golang.org/grpc && (git cat-file -t $REV 2>/dev/null || git fetch -q origin $REV) && git reset --hard $REV)
-
-# Optimization to speed up iterative development, not necessary for correctness:
-RUN go install cloud.google.com/go/compute/metadata \
-	cloud.google.com/go/iam \
-	cloud.google.com/go/internal \
-	cloud.google.com/go/internal/optional \
-	cloud.google.com/go/internal/trace \
-	cloud.google.com/go/internal/version \
-	cloud.google.com/go/storage \
-	github.com/golang/protobuf/proto \
-	github.com/golang/protobuf/protoc-gen-go/descriptor \
-	github.com/golang/protobuf/ptypes \
-	github.com/golang/protobuf/ptypes/any \
-	github.com/golang/protobuf/ptypes/duration \
-	github.com/golang/protobuf/ptypes/timestamp \
-	github.com/google/go-github/github \
-	github.com/google/go-querystring/query \
-	github.com/googleapis/gax-go \
-	github.com/gregjones/httpcache \
-	go.opencensus.io/exporter/stackdriver/propagation \
-	go.opencensus.io/internal \
-	go.opencensus.io/internal/tagencoding \
-	go.opencensus.io/plugin/ochttp \
-	go.opencensus.io/plugin/ochttp/propagation/b3 \
-	go.opencensus.io/stats \
-	go.opencensus.io/stats/internal \
-	go.opencensus.io/stats/view \
-	go.opencensus.io/tag \
-	go.opencensus.io/trace \
-	go.opencensus.io/trace/internal \
-	go.opencensus.io/trace/propagation \
-	go4.org/types \
-	golang.org/x/crypto/acme \
-	golang.org/x/crypto/acme/autocert \
-	golang.org/x/net/context \
-	golang.org/x/net/context/ctxhttp \
-	golang.org/x/net/http2 \
-	golang.org/x/net/http2/hpack \
-	golang.org/x/net/idna \
-	golang.org/x/net/internal/timeseries \
-	golang.org/x/net/lex/httplex \
-	golang.org/x/net/trace \
-	golang.org/x/oauth2 \
-	golang.org/x/oauth2/google \
-	golang.org/x/oauth2/internal \
-	golang.org/x/oauth2/jws \
-	golang.org/x/oauth2/jwt \
-	golang.org/x/sync/errgroup \
-	golang.org/x/text/secure/bidirule \
-	golang.org/x/text/transform \
-	golang.org/x/text/unicode/bidi \
-	golang.org/x/text/unicode/norm \
-	golang.org/x/time/rate \
-	google.golang.org/api/gensupport \
-	google.golang.org/api/googleapi \
-	google.golang.org/api/googleapi/internal/uritemplates \
-	google.golang.org/api/googleapi/transport \
-	google.golang.org/api/internal \
-	google.golang.org/api/iterator \
-	google.golang.org/api/option \
-	google.golang.org/api/storage/v1 \
-	google.golang.org/api/transport/http \
-	google.golang.org/genproto/googleapis/api/annotations \
-	google.golang.org/genproto/googleapis/iam/v1 \
-	google.golang.org/genproto/googleapis/rpc/code \
-	google.golang.org/genproto/googleapis/rpc/status \
-	google.golang.org/grpc \
-	google.golang.org/grpc/balancer \
-	google.golang.org/grpc/balancer/base \
-	google.golang.org/grpc/balancer/roundrobin \
-	google.golang.org/grpc/channelz \
-	google.golang.org/grpc/codes \
-	google.golang.org/grpc/connectivity \
-	google.golang.org/grpc/credentials \
-	google.golang.org/grpc/encoding \
-	google.golang.org/grpc/encoding/proto \
-	google.golang.org/grpc/grpclb/grpc_lb_v1/messages \
-	google.golang.org/grpc/grpclog \
-	google.golang.org/grpc/internal \
-	google.golang.org/grpc/keepalive \
-	google.golang.org/grpc/metadata \
-	google.golang.org/grpc/naming \
-	google.golang.org/grpc/peer \
-	google.golang.org/grpc/resolver \
-	google.golang.org/grpc/resolver/dns \
-	google.golang.org/grpc/resolver/passthrough \
-	google.golang.org/grpc/stats \
-	google.golang.org/grpc/status \
-	google.golang.org/grpc/tap \
-	google.golang.org/grpc/transport
-# END deps
+# Optimization for iterative docker build speed, not necessary for correctness:
+# TODO: write a tool to make writing Go module-friendly Dockerfiles easier.
+RUN go install cloud.google.com/go/compute/metadata
+RUN go install github.com/google/go-github/github
+RUN go install golang.org/x/oauth2
+COPY autocertcache /go/src/golang.org/x/build/autocertcache
+COPY gerrit /go/src/golang.org/x/build/gerrit
+COPY maintner /go/src/golang.org/x/build/maintner
+COPY internal /go/src/golang.org/x/build/internal
+COPY cmd/pubsubhelper/pubsubtypes /go/src/golang.org/x/build/cmd/pubsubhelper/pubsubtypes
+RUN go install golang.org/x/build/gerrit
+RUN go install golang.org/x/build/internal/https
+RUN go install golang.org/x/build/maintner
+RUN go install golang.org/x/build/maintner/godata
 
 COPY . /go/src/golang.org/x/build/
-
 RUN go install golang.org/x/build/cmd/gerritbot
 
 FROM alpine
diff --git a/cmd/gerritbot/Makefile b/cmd/gerritbot/Makefile
index 3a87a67..98901dc 100644
--- a/cmd/gerritbot/Makefile
+++ b/cmd/gerritbot/Makefile
@@ -8,10 +8,6 @@
 IMAGE_STAGING := gcr.io/go-dashboard-dev/gerritbot
 IMAGE_PROD := gcr.io/symbolic-datum-552/gerritbot
 
-update-deps:
-	go install golang.org/x/build/cmd/gitlock
-	gitlock --update=Dockerfile golang.org/x/build/cmd/gerritbot
-
 docker-prod: Dockerfile
 	docker build --force-rm -f Dockerfile --tag=$(IMAGE_PROD):$(VERSION) ../..
 	docker tag $(IMAGE_PROD):$(VERSION) $(IMAGE_PROD):$(MUTABLE_VERSION)