added circle ci

.circleci/config.yml

@@ -0,0 +1,34 @@
+version: 2
+jobs:
+  build:
+    docker:
+      - image: circleci/golang:1.8
+    working_directory: /go/src/github.com/anaganisk/digitalocean-dynamic-dns-ip
+    steps:
+      - checkout
+      - attach_workspace:
+          at: ./releases
+      - run:
+          name: Build
+          command: |
+            echo 'export GO111MODULE=on' >> $BASH_ENV
+            source $BASH_ENV
+            ./ci-build-script.sh
+            ghr -t ${GITHUB_TOKEN} -u ${CIRCLE_PROJECT_USERNAME} -r ${CIRCLE_PROJECT_REPONAME} -c ${CIRCLE_SHA1} -delete ${CIRCLE_TAG} ./releases/
+
+workflows:
+  version: 2
+  main:
+    jobs:
+      - build:
+          filters:
+            tags:
+              only: /^\d+\.\d+\.\d+$/
+      - publish-github-release:
+          requires:
+            - build
+          filters:
+            branches:
+              ignore: /.*/
+            tags:
+              only: /^\d+\.\d+\.\d+$/

.gitignore

@@ -5,3 +5,4 @@ digitalocean-dynamic-ip.json
 
 # GoLand IDE
 .idea/
+releases

README.md

@@ -1,10 +1,12 @@
 # DIGITAL OCEAN DYNAMIC IP API CLIENT
+
 A simple script in Go language to automatically update Digital ocean DNS records if you have a dynamic IP. Since it can be compiled on any platform, you can use it along with raspberrypi etc.
 
 To find your Dynamic IP, this program will call out to https://ipv4bot.whatismyipaddress.com for ipv4 addresses and https://ipv6bot.whatismyipaddress.com for ipv6 addresses. This is to support dual-stack environments. (These URLs can be customized; see Usage, below.)
 
 ## Requirements
-Requires Git, Go 1.8+, and https://github.com/mitchellh/go-homedir for building.
+
+Requires Git, Go 1.8+.
 
 Requires that the record already exists in DigitalOcean's DNS so that it can be updated.
 (manually find your IP and add it to DO's DNS it will later be updated)
@@ -12,11 +14,18 @@ Requires that the record already exists in DigitalOcean's DNS so that it can be
 Requires a Digital Ocean API key that can be created at https://cloud.digitalocean.com/account/api/tokens.
 
 ## Building
-You first need to install the "homedir" module if you aren't using it in another project. To install the module, run `go get github.com/mitchellh/go-homedir`
 
-Once the module is fetched, you should be able to compile the program using `go build`
+You first need to install the "homedir" module if you aren't using it in another project. To install the module.
+
+```bash
+# Skip to next step, if you have GO111MODULE=on in your environment it is fetched automatically
+go get github.com/mitchellh/go-homedir
+# build the project
+go build
+```
 
 ## Usage
+
 ```bash
 # clone the repo in ~/go/src/github.com/anaganisk:
 git clone https://github.com/anaganisk/digitalocean-dynamic-dns-ip.git

ci-build-script.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+package=$1
+if [[ -z "$package" ]]; then
+  echo "usage: $0 <package-name>"
+  exit 1
+fi
+package_split=(${package//\// })
+package_name=${package_split[-1]}
+
+platforms=("windows/amd64" "windows/386" "darwin/amd64" "linux/386" "linux/amd64" "linux/arm" "linux/arm64")
+mkdir releases
+for platform in "${platforms[@]}"
+do
+    platform_split=(${platform//\// })
+    GOOS=${platform_split[0]}
+    GOARCH=${platform_split[1]}
+    output_name=$package_name'-'$GOOS'-'$GOARCH
+    if [ $GOOS = "windows" ]; then
+        output_name+='.exe'
+    fi  
+
+    env GOOS=$GOOS GOARCH=$GOARCH go build -o releases/$output_name $package
+    if [ $? -ne 0 ]; then
+        echo 'An error has occurred! Aborting the script execution...'
+        exit 1
+    fi
+done

go.mod

@@ -0,0 +1,5 @@
+module github.com/anaganisk/digitalocean-dynamic-dns-ip
+
+require github.com/mitchellh/go-homedir v1.1.0
+
+go 1.13

go.sum

@@ -0,0 +1,2 @@
+github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
+github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=