Add GitHub Action for release

.github/build.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+cd ${GITHUB_WORKSPACE:-.}
+
+mkdir -p .dist
+
+go run main.go --version | cut -c 9- > .version
+
+for GOOS in darwin linux windows; do
+	SUFFIX=`[ $GOOS = "windows" ] && echo ".exe"`
+	for GOARCH in 386 amd64; do
+		TARGET=.release/$GOOS/$GOARCH/eager$SUFFIX
+		go build -v -o $TARGET
+		tar --transform 's/.*\///g' -czvf .dist/eager-$GOOS-$GOARCH.tar.gz $TARGET README.md LICENSE
+	done
+done

.github/main.workflow

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+workflow "Build master release draft" {
+  on = "push"
+  resolves = [
+    "Add darwin 386 binary to draft",
+    "Add darwin amd64 binary to draft",
+    "Add linux 386 binary to draft",
+    "Add linux amd64 binary to draft",
+    "Add windows 386 binary to draft",
+    "Add windows amd64 binary to draft"
+  ]
+}
+
+action "Filter for master" {
+  uses = "actions/bin/filter@master"
+  args = "branch master"
+}
+
+action "Build" {
+  needs = ["Filter for master"]
+  uses = "docker://golang:1.12-stretch"
+  runs = ["sh", "-c", "$GITHUB_WORKSPACE/.github/build.sh"]
+}
+
+action "Draft" {
+  needs = ["Build"]
+  uses = "swinton/httpie.action@master"
+  args = ["--auth-type=jwt", "--auth=$GITHUB_TOKEN", "POST", "api.github.com/repos/$GITHUB_REPOSITORY/releases", "tag_name=`cat $GITHUB_WORKSPACE/.version`", "name=`cat $GITHUB_WORKSPACE/.version`", "draft:=true"]
+  secrets = ["GITHUB_TOKEN"]
+}
+
+action "Add darwin 386 binary to draft" {
+  needs = ["Draft"]
+  uses = "swinton/httpie.action@master"
+  args = ["--auth-type=jwt", "--auth=$GITHUB_TOKEN", "POST", "`jq .upload_url $HOME/Draft.response.body --raw-output | sed 's/{.*}//g'`?name=eager-`cat $GITHUB_WORKSPACE/.version`_darwin-386.tar.gz", "@$GITHUB_WORKSPACE/.dist/eager-darwin-386.tar.gz"]
+  secrets = ["GITHUB_TOKEN"]
+}
+
+action "Add darwin amd64 binary to draft" {
+  needs = ["Draft"]
+  uses = "swinton/httpie.action@master"
+  args = ["--auth-type=jwt", "--auth=$GITHUB_TOKEN", "POST", "`jq .upload_url $HOME/Draft.response.body --raw-output | sed 's/{.*}//g'`?name=eager-`cat $GITHUB_WORKSPACE/.version`_darwin-amd64.tar.gz", "@$GITHUB_WORKSPACE/.dist/eager-darwin-amd64.tar.gz"]
+  secrets = ["GITHUB_TOKEN"]
+}
+
+action "Add linux 386 binary to draft" {
+  needs = ["Draft"]
+  uses = "swinton/httpie.action@master"
+  args = ["--auth-type=jwt", "--auth=$GITHUB_TOKEN", "POST", "`jq .upload_url $HOME/Draft.response.body --raw-output | sed 's/{.*}//g'`?name=eager-`cat $GITHUB_WORKSPACE/.version`_linux-386.tar.gz", "@$GITHUB_WORKSPACE/.dist/eager-linux-386.tar.gz"]
+  secrets = ["GITHUB_TOKEN"]
+}
+
+action "Add linux amd64 binary to draft" {
+  needs = ["Draft"]
+  uses = "swinton/httpie.action@master"
+  args = ["--auth-type=jwt", "--auth=$GITHUB_TOKEN", "POST", "`jq .upload_url $HOME/Draft.response.body --raw-output | sed 's/{.*}//g'`?name=eager-`cat $GITHUB_WORKSPACE/.version`_linux-amd64.tar.gz", "@$GITHUB_WORKSPACE/.dist/eager-linux-amd64.tar.gz"]
+  secrets = ["GITHUB_TOKEN"]
+}
+
+action "Add windows 386 binary to draft" {
+  needs = ["Draft"]
+  uses = "swinton/httpie.action@master"
+  args = ["--auth-type=jwt", "--auth=$GITHUB_TOKEN", "POST", "`jq .upload_url $HOME/Draft.response.body --raw-output | sed 's/{.*}//g'`?name=eager-`cat $GITHUB_WORKSPACE/.version`_windows-386.tar.gz", "@$GITHUB_WORKSPACE/.dist/eager-windows-386.tar.gz"]
+  secrets = ["GITHUB_TOKEN"]
+}
+
+action "Add windows amd64 binary to draft" {
+  needs = ["Draft"]
+  uses = "swinton/httpie.action@master"
+  args = ["--auth-type=jwt", "--auth=$GITHUB_TOKEN", "POST", "`jq .upload_url $HOME/Draft.response.body --raw-output | sed 's/{.*}//g'`?name=eager-`cat $GITHUB_WORKSPACE/.version`_windows-amd64.tar.gz", "@$GITHUB_WORKSPACE/.dist/eager-windows-amd64.tar.gz"]
+  secrets = ["GITHUB_TOKEN"]
+}