Use go install for dep binaries when building docker (#5858)

Update the way our docker build script installs the binaries we rely on
at runtime to avoid "go get" deprecation warnings.

Fixes #5744

.github/workflows/boulder-ci.yml

@@ -33,8 +33,8 @@ jobs:
       matrix:
         # Add additional docker image tags here and all tests will be run with the additional image.
         BOULDER_TOOLS_TAG:
-          - go1.17_2021-12-10
-          - go1.17.5_2021-12-10
+          - go1.17_2021-12-16
+          - go1.17.5_2021-12-16
         # Tests command definitions. Use the entire docker-compose command you want to run.
         tests:
           # Run ./test.sh --help for a description of each of the flags.

docker-compose.yml

@@ -1,7 +1,7 @@
 version: '3'
 services:
   boulder:
-    image: &boulder_image letsencrypt/boulder-tools:${BOULDER_TOOLS_TAG:-go1.17_2021-12-10}
+    image: &boulder_image letsencrypt/boulder-tools:${BOULDER_TOOLS_TAG:-go1.17_2021-12-16}
     environment:
       FAKE_DNS: 10.77.77.77
       BOULDER_CONFIG_DIR: test/config

test/boulder-tools/build.sh

@@ -43,15 +43,11 @@ curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/insta
 # Note: The version of golang/protobuf is partially tied to the version of grpc
 # used by Boulder overall. Updating it may require updating the grpc version
 # and vice versa.
-GO111MODULE=on go get \
-  bitbucket.org/liamstask/goose/cmd/goose \
-  google.golang.org/protobuf/cmd/protoc-gen-go@v1.26.0 \
-  google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.1.0 \
-  golang.org/x/tools/cmd/stringer
-
-# Pebble's latest version is v2+, but it's not properly go mod compatible, so we
-# fetch it in GOPATH mode.
-GO111MODULE=off go get github.com/letsencrypt/pebble/cmd/pebble-challtestsrv
+go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.26.0
+go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.1.0
+go install bitbucket.org/liamstask/goose/cmd/goose@latest
+go install golang.org/x/tools/cmd/stringer@latest
+go install github.com/letsencrypt/pebble/cmd/pebble-challtestsrv@master
 
 go clean -cache
 go clean -modcache