Add GitHub action for docker generation and publish to Github Packages (

#16)

* Test package action for github packages
* Update package name
* Add latest tag for newest docker build
* Update readme to point to github packages instead of docker hub

.github/workflows/publish.yml

@@ -0,0 +1,31 @@
+name: Publish to Docker
+on:
+  push:
+    branches:
+      - master
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: 1.19.x
+
+      - name: Build
+        run: go build -v ./...
+
+      - name: Test
+        run: go test -v ./...
+
+      - name: Build container
+        uses: docker/build-push-action@v1
+        with:
+          username: scosman
+          password: ${{ secrets.GITHUB_TOKEN }}
+          registry: docker.pkg.github.com
+          repository: scosman/packages/zipstreamer
+          tags: latest
+          tag_with_sha: true

README.md

@@ -76,7 +76,7 @@ Cloud Run is ideal for zipstreamer, as it routes many requests to a single conta
 
 ### Docker 
 
-This repo contains an dockerfile, and an image is hosted [on Docker Hub](https://hub.docker.com/r/scosman/zipstreamer).
+This repo contains an dockerfile, and an image is published [on Github Packages](https://github.com/scosman/zipstreamer/pkgs/container/packages%2Fzipstreamer).
 
 #### Build Your Own Image
 
@@ -88,12 +88,14 @@ docker build --tag docker-zipstreamer .
 docker run --env PORT=8080 -p 8080:8080 docker-zipstreamer
 ```
 
-#### Run Docker Hub Image
+#### Run Offical Package from Github Packages
+
+Currently every change to master it published as a package. To use these offical packages:
 
 ```
-docker pull scosman/zipstreamer
+docker pull ghcr.io/scosman/packages/zipstreamer:latest
 # Start on port 8080
-docker run --env PORT=8080 -p 8080:8080 scosman/zipstreamer
+docker run --env PORT=8080 -p 8080:8080 ghcr.io/scosman/packages/zipstreamer:latest
 ```
 
 ## Config