push docker image on build

.travis.yml

@@ -7,20 +7,33 @@ cache:
   directories:
     - $GOPATH/pkg/mod
     - $HOME/.cache/go-build
-before_script:
+services:
+  - docker
+b2efore_script:
 - go build -ldflags="-X github.com/cenkalti/tcpproxy.Version=$TRAVIS_TAG" -o tcpproxy cmd/tcpproxy/main.go
-- curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $(go env GOPATH)/bin v1.20.0
+- curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $(go env GOPATH)/bin v1.23.7
 - go get golang.org/x/tools/cmd/cover
 - go get github.com/mattn/goveralls
 script:
 - golangci-lint run
 - goveralls -v -race -package ./...
 deploy:
-  provider: releases
-  skip_cleanup: true
-  file: tcpproxy
-  on:
-    repo: cenkalti/tcpproxy
-    tags: true
-  api_key:
-    secure: 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
+  - provider: releases
+    skip_cleanup: true
+    file: tcpproxy
+    on:
+      repo: cenkalti/tcpproxy
+      tags: true
+    api_key:
+      secure: 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
+  - provider: script
+    skip_cleanup: true
+    file: tcpproxy
+    on:
+      repo: cenkalti/tcpproxy
+      tags: true
+    script:
+      - echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin
+      - docker build -t tcpproxy .
+      - docker tag tcpproxy $DOCKER_USERNAME/tcpproxy
+      - docker push $DOCKER_USERNAME/tcpproxy