Setup a working pipeline

* add tests to ensure function even after switching docker client api version
* switch docker client api version to remove import of Sirupsen and get rid of the casing workaround
* migrate from glide to dep to go modules
* rewrite ci workflow
  * only run publish on version tags
  * only run build on branches
  * update goreleaser config
  * disable automated latest tag push
* remove dependency to v2tec/docker-gobuilder
* remove dead code and files
* add golands .idea folder to gitignore
* add label to released docker images
* add test reporting, add some unit tests
* change test output dir
* fix goreleaser versions
* add debug output for circleci and goreleaser
* disable cgo

goreleaser.yml

@@ -1,39 +1,16 @@
-# Build customization
 build:
-  # Path to main.go file.
-  # Default is `main.go`
   main: ./main.go
-
-  # GOOS list to build in.
-  # For more info refer to https://golang.org/doc/install/source#environment
-  # Defaults are darwin and linux
+  binary: watchtower
   goos:
     - linux
     - windows
-
-  # GOARCH to build in.
-  # For more info refer to https://golang.org/doc/install/source#environment
-  # Defaults are 386 and amd64
   goarch:
     - amd64
     - arm
     - arm64
-
-# Archive customization
 archive:
-  # You can change the name of the archive.
-  # This is parsed with Golang template engine and the following variables.
   name_template: "{{.ProjectName}}_{{.Os}}_{{.Arch}}"
-
-  # Archive format. Valid options are `tar.gz` and `zip`.
-  # Default is `zip`
   format: tar.gz
-
-  # Replacements for GOOS and GOARCH on the archive name.
-  # The keys should be valid GOOS or GOARCH values followed by your custom
-  # replacements.
-  # By default, `replacements` replace GOOS and GOARCH values with valid outputs
-  # of `uname -s` and `uname -m` respectively.
   replacements:
     arm: armhf
     arm64: arm64v8
@@ -41,42 +18,42 @@ archive:
     386: 386
     darwin: macOS
     linux: linux
-
   format_overrides:
     - goos: windows
       format: zip
-
-  # Additional files you want to add to the archive.
-  # Defaults are any files matching `LICENCE*`, `LICENSE*`,
-  # `README*` and `CHANGELOG*` (case-insensitive)
   files:
     - LICENSE.md
-
 dockers:
   -
     goos: linux
     goarch: amd64
     goarm: ''
-    binary: watchtower
-    image: containrrr/watchtower
     dockerfile: dockerfile/amd64/Dockerfile
-    tag_templates:
-      - '{{ .Version }}'
+    build_flag_templates:
+      - "--label=com.centurylinklabs.watchtower=true"
+    image_templates:
+      - containrrr/watchtower:{{ .Version }}
+    binaries:
+      - watchtower
   -
     goos: linux
     goarch: arm
     goarm: 6
-    binary: watchtower
-    image: containrrr/watchtower
     dockerfile: dockerfile/armhf/Dockerfile
-    tag_templates:
-      - 'armhf-{{ .Version }}'
+    build_flag_templates:
+      - "--label=com.centurylinklabs.watchtower=true"
+    image_templates:
+      - containrrr/watchtower:armhf-{{ .Version }}
+    binaries:
+      - watchtower
   -
     goos: linux
     goarch: arm64
     goarm: ''
-    binary: watchtower
-    image: containrrr/watchtower
     dockerfile: dockerfile/arm64v8/Dockerfile
-    tag_templates:
-      - 'arm64v8-{{ .Version }}'
+    build_flag_templates:
+      - "--label=com.centurylinklabs.watchtower=true"
+    image_templates:
+      - containrrr/watchtower:arm64v8-{{ .Version }}
+    binaries:
+      - watchtower