simplify docker build

.goreleaser.yml

@@ -24,11 +24,12 @@ changelog:
 dockers:
   -
     image_templates:
+    - quay.io/mittwald/kubernetes-secret-generator:latest
     - quay.io/mittwald/kubernetes-secret-generator:stable
     - quay.io/mittwald/kubernetes-secret-generator:{{ .Tag }}
     - quay.io/mittwald/kubernetes-secret-generator:{{ .Tag }}-{{ .Env.GO_VERSION }}
-    extra_files:
-    - util/copy_secret.go
-    - main.go
-    - go.mod
-    - go.sum
+    binaries:
+      - kubernetes-secret-generator
+    goos: linux
+    goarch: amd64
+    goarm: ''

.travis.yml

@@ -24,7 +24,7 @@ before_deploy:
 deploy:
   - provider: script
     skip_cleanup: true
-    script: docker build -t "${FULL_IMAGE}:latest" && docker push "${FULL_IMAGE}:latest"
+    script: bash <(wget -qO- https://git.io/goreleaser) --snapshot --skip-publish --rm-dist && docker push "${FULL_IMAGE}:latest"
     on:
       tags: false
       branch: master

Dockerfile

@@ -1,10 +1,5 @@
-FROM        golang:1.12
-WORKDIR     /src
-COPY        . .
-RUN         CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o kubernetes-secret-generator
-
 FROM        scratch
 LABEL       MAINTAINER="Martin Helmich <[email protected]>"
-COPY        --from=0 /src/kubernetes-secret-generator /kubernetes-secret-generator
+COPY        kubernetes-secret-generator /kubernetes-secret-generator
 ENTRYPOINT  ["/kubernetes-secret-generator"]
 CMD         ["-logtostderr"]