Added Dockerfile and setup build

The Dockerfile is now setup and wired into the Travis deploy process.

Author: nickrobison

.gitignore

@@ -1,2 +1,6 @@
 .vscode
 *.deb
+bin/
+debug*
+go-*
+config.json

Dockerfile

@@ -0,0 +1,16 @@
+FROM alpine:latest
+LABEL version="0.1.0"
+LABEL description="Docker image for running go-cddns application"
+LABEL maintainer="Nick Robison [email protected]"
+
+# Setup the necessary SSL certs
+RUN apk update \
+        && apk upgrade \
+        && apk add --no-cache \
+        ca-certificates \
+        && update-ca-certificates 2>/dev/null || true
+
+# Add the go binary and config files
+COPY bin/go-cddns*_amd64 /app/go-cddns
+WORKDIR /app
+CMD ["./go-cddns", "--config=/etc/config.json"]

Makefile

@@ -2,7 +2,7 @@ VERSION := 0.1.0
 PKGNAME := go-cddns
 LICENSE := MIT
 URL := https://github.com/nickrobison/go-cddns
-RELEASE := 1
+RELEASE := 2
 USER := cddns
 DESC := Dynamic DNS client for Cloudflare
 MAINTAINER := Nick Robison <[email protected]>
@@ -33,42 +33,44 @@ test:
 all: $(PLATFORMS)
 
 $(PLATFORMS):
-	GOOS=$(os) GOARCH=$(arch) go build -o 'bin/go-cddns_0.1.0_$(arch)' .
-
+	GOOS=$(os) GOARCH=$(arch) go build -o 'bin/go-cddns_${VERSION}_$(arch)' .
 
 clean:
 	-rm -rf bin/
 	-rm go-cddns
 	-rm *.deb
 	-rm packaging/debian/usr/bin/go-cddns
 
-release: clean
+bintray:
 	docker pull alanfranz/fpm-within-docker:debian-jessie
-	# Build
-	GOOS=linux GOARCH=amd64 go build -o packaging/debian/usr/bin/go-cddns .
-	# Package
+	# Copy the amd64 binary
+	cp /bin/go-cddns-${VERSION}_amd64 packaging/debian/usr/bin/go-cddns
+	# Package amd64
 	docker run --rm -it -v "${PWD}:${DOCKER_WDIR}" -w ${DOCKER_WDIR} --entrypoint fpm alanfranz/fpm-within-docker:debian-jessie ${DEB_OPTS} \
 	--iteration ${RELEASE} \
 	--architecture amd64 \
 	--deb-systemd go-cddns.service \
 	-C packaging/debian \
-	${FPM_OPTS} \
-	# Remove it
-	rm packaging/debian/usr/bin/go-cddns
+	${FPM_OPTS}
 	# Upload it
 	./upload.sh ${VERSION} ${RELEASE} amd64
-	# Build
-	GOOS=linux GOARCH=arm go build -o packaging/debian/usr/bin/go-cddns .
-	# Package
+	# Copy the arm binary
+	cp /bin/go-cddns-${VERSION}_arm packaging/debian/usr/bin/go-cddns
+	# Package arm
 	docker run --rm -it -v "${PWD}:${DOCKER_WDIR}" -w ${DOCKER_WDIR} --entrypoint fpm alanfranz/fpm-within-docker:debian-jessie ${DEB_OPTS} \
 	--iteration ${RELEASE} \
 	--architecture armhf \
 	--deb-systemd go-cddns.service \
 	-C packaging/debian \
-	${FPM_OPTS} \
-	# Remove it
-	rm packaging/debian/usr/bin/go-cddns
+	${FPM_OPTS}
 	# Upload everything
-	./upload.sh ${VERSION} ${RELEASE} armhf	
+	./upload.sh ${VERSION} ${RELEASE} armhf
+
+docker:
+	docker build . -t nickrobison/go-cddns
+	./docker_push.sh
+
+release: clean all bintray docker
+
 
-.PHONY: all $(PLATFORMS) release clean test
+.PHONY: all $(PLATFORMS) release clean test bintray docker

README.md

@@ -1,17 +1,21 @@
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Build Status](https://travis-ci.org/nickrobison/go-cddns.svg?branch=master)](https://travis-ci.org/nickrobison/go-cddns)
 [ ![Download](https://api.bintray.com/packages/nickrobison/debian/go-cddns/images/download.svg) ](https://bintray.com/nickrobison/debian/go-cddns/_latestVersion)
+
 # go-cddns
+
 Golang client for dynamically updating cloudflare DNS records on a specified interval. Useful if you're using Cloudflare to point to a device with a dynamic IP Address
 
 ## Installation
 
 ### Go package
+
 ```bash
 go get -u github.com/nickrobison/go-cddns
 ```
 
 ### Debian repository
+
 We also now have a debian (and Ubuntu) repository with builds for both amd64 and arm architectures.
 Since we require systemd, the builds only support debian jessie and newer, and ubuntu xenial (16.04) and later.
 
@@ -47,6 +51,31 @@ Run the application, optionally specifying the path to the config file.
 go-cddns -config=/path/to/file
 ```
 
+## Docker Image
+
+go-cddns is also provided as a Docker image.
+The application automatically starts when the container boots, but it lacks a functioning config file.
+You'll need to add the path to the desired config as a volume.
+
+```bash
+docker run -v /{path/to/config}/config.json:/etc/config.json nickrobison/go-cddns
+
+The container can be controlled by systemd via a custom unit file, such as this:
+
+```ini
+[Unit]
+Description=Go-cddns container
+After=docker.service
+
+[Service]
+Restart=always
+ExecStart=/usr/bin/docker start -a -v /etc/config.json:/etc/config.json nickrobison/go-cddns
+ExecStop=/usr/bin/docker stop -t 2 nickrobison/go-cddns
+
+[Install]
+WantedBy=local.target
+```
+
 ## Notes
 
 * The update interval must be more than 5 minutes, per the WhatIsMyIP API [rules](http://whatismyipaddress.com/api).

docker_push.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin
+docker push nickrobison/go-cddns