use circleci/golang images directly

We currently use an container image for `test-devices` job only; while
all other jobs use machine executor.

This allows us to switch golang and protoc verions easily without
manually managing Docker images (which requires building them manually
on a dev machines, etc).  All that while, we install dependencies on
every build in all other jobs..

`test-devices` now is one of the fastest jobs and isn't a constraint or
a bottleneck, so increasing its overhead by few seconds doesn't hurt the
overall developer iteration.

If we split tests effectively later, we can revisit.

.circleci/config.yml

@@ -70,7 +70,7 @@ executors:
   go:
     working_directory: /go/src/github.com/hashicorp/nomad
     docker:
-      - image: hashicorpnomad/ci-build-image:20190823_2
+      - image: circleci/golang:1.12.9
   go-machine:
     working_directory: ~/go/src/github.com/hashicorp/nomad
     machine:
@@ -101,6 +101,8 @@ jobs:
       GOPATH: /go
     steps:
       - checkout
+      - install-protoc
+      - run: make deps lint-deps
       - run: make check
 
   test-container:
@@ -119,6 +121,10 @@ jobs:
       GOPATH: /go
     steps:
       - checkout
+      - run: make deps
+      - install-protoc
+      - install-consul
+      - install-vault
       - run-tests
       - store_test_results:
           path: /tmp/test-reports

Dockerfile.ci

@@ -1,31 +0,0 @@
-FROM circleci/golang:1.12.9
-ENV PROTOC_VERSION 3.6.1
-ENV VAULT_VERSION 1.1.0
-ENV CONSUL_VERSION 1.4.0
-
-RUN sudo apt-get update \
-    && sudo apt-get -y upgrade \
-    && sudo apt-get install -y unzip \
-    && sudo rm -rf /var/lib/apt/lists/*
-
-RUN wget -q -O /tmp/protoc.zip https://github.com/google/protobuf/releases/download/v${PROTOC_VERSION}/protoc-${PROTOC_VERSION}-linux-x86_64.zip \
-    && unzip /tmp/protoc.zip -d /tmp/protoc3 \
-    && sudo mv /tmp/protoc3/bin/* /usr/local/bin/ \
-    && sudo mv /tmp/protoc3/include/* /usr/local/include/ \
-    && sudo ln -s /usr/local/bin/protoc /usr/bin/protoc \
-    && rm -rf /tmp/protoc*
-
-RUN wget -q -O /tmp/vault.zip https://releases.hashicorp.com/vault/${VAULT_VERSION}/vault_${VAULT_VERSION}_linux_amd64.zip \
-    && sudo unzip -d /usr/local/bin /tmp/vault.zip \
-    && rm -rf /tmp/vault*
-
-RUN wget -q -O /tmp/consul.zip https://releases.hashicorp.com/consul/${CONSUL_VERSION}/consul_${CONSUL_VERSION}_linux_amd64.zip \
-    && sudo unzip -d /usr/local/bin /tmp/consul.zip \
-    && rm -rf /tmp/consul*
-
-## Add the git repo and run bootstrap to install CI dependencies, then remove
-## the extra checkout to save image size.
-COPY GNUmakefile /tmp/build/GNUmakefile
-COPY scripts /tmp/build/scripts
-RUN cd /tmp/build && sudo chown -R $(whoami) /tmp/build && make deps lint-deps && rm -rf /tmp/build
-

GNUmakefile

@@ -380,10 +380,3 @@ ui-screenshots:
 ui-screenshots-local:
 	@echo "==> Collecting UI screenshots (local)..."
 	@cd scripts/screenshots/src && SCREENSHOTS_DIR="../screenshots" node index.js
-
-.PHONY: ci-image
-ci-image: IMAGE_TAG=$(shell date +%Y%m%d)
-ci-image:
-	@echo "==> Building CI Image hashicorpnomad/ci-build-image:$(IMAGE_TAG)"
-	@docker build . -f Dockerfile.ci -t hashicorpnomad/ci-build-image:$(IMAGE_TAG)
-	@echo "To push the image, run 'docker push hashicorpnomad/ci-build-image:$(IMAGE_TAG)'"