Switch to using go modules for dependency management

.circleci/config.yml

@@ -1,73 +1,38 @@
-workspace_root: &workspace_root
-    /go/src/github.com/gruntwork-io/fetch
-
-vendor_path: &vendor_path
-   /go/src/github.com/gruntwork-io/fetch/vendor
-
 defaults: &defaults
-  working_directory: *workspace_root
   docker:
-    - image: 087285199408.dkr.ecr.us-east-1.amazonaws.com/circle-ci-test-image-base:latest
+    - image: 087285199408.dkr.ecr.us-east-1.amazonaws.com/circle-ci-test-image-base:go1.13
 
 version: 2
 jobs:
-  install_dependencies:
-    <<: *defaults
-    steps:
-      - checkout
-      - attach_workspace:
-          at: *workspace_root
-      - restore_cache:
-          keys:
-            - dep-{{ checksum "Gopkg.lock" }}
-      - run: dep ensure
-      - save_cache:
-          key: dep-{{ checksum "Gopkg.lock" }}
-          paths:
-            - *vendor_path
-      - persist_to_workspace:
-          root: *workspace_root
-          paths: vendor
-
   test:
     <<: *defaults
     steps:
       - checkout
-      - attach_workspace:
-          at: *workspace_root
-      - run: run-go-tests --circle-ci-2
+      - run: run-go-tests
 
   build:
     <<: *defaults
     steps:
       - checkout
-      - attach_workspace:
-          at: *workspace_root
-      - run: CGO_ENABLED=0 build-go-binaries --circle-ci-2 --app-name fetch --dest-path bin --ld-flags "-X main.VERSION=$CIRCLE_TAG"
+      - run: CGO_ENABLED=0 build-go-binaries --app-name fetch --dest-path bin --ld-flags "-X main.VERSION=$CIRCLE_TAG"
       - persist_to_workspace:
-          root: *workspace_root
+          root: .
           paths: bin
 
   deploy:
     <<: *defaults
     steps:
       - checkout
       - attach_workspace:
-          at: *workspace_root
+          at: .
       - run: cd bin && sha256sum * > SHA256SUMS
       - run: upload-github-release-assets bin/*
 
 workflows:
   version: 2
   build-and-test:
     jobs:
-      - install_dependencies:
-          filters:
-            tags:
-              only: /^v.*/
       - test:
-          requires:
-            - install_dependencies
           filters:
             tags:
               only: /^v.*/
@@ -96,7 +61,4 @@ workflows:
             branches:
               only: master
     jobs:
-      - install_dependencies
-      - test:
-          requires:
-            - install_dependencies
+      - test

go.mod

@@ -0,0 +1,10 @@
+module github.com/gruntwork-io/fetch
+
+go 1.14
+
+require (
+	github.com/dustin/go-humanize v1.0.0
+	github.com/hashicorp/go-version v1.2.1
+	github.com/stretchr/testify v1.6.1
+	gopkg.in/urfave/cli.v1 v1.20.0
+)

go.sum

@@ -0,0 +1,17 @@
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
+github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
+github.com/hashicorp/go-version v1.2.1 h1:zEfKbn2+PDgroKdiOzqiE8rsmLqU2uwi5PB5pBJ3TkI=
+github.com/hashicorp/go-version v1.2.1/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
+github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/urfave/cli.v1 v1.20.0 h1:NdAVW6RYxDif9DhDHaAortIu956m2c0v+09AZBPTbE0=
+gopkg.in/urfave/cli.v1 v1.20.0/go.mod h1:vuBzUtMdQeixQj8LVd+/98pzhxNGQoyuPBlsXHOQNO0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=