added github docker registry

.github/workflows/release.yaml

@@ -1,3 +1,5 @@
+name: Release
+
 on:
   release:
     types: [created]
@@ -19,3 +21,17 @@ jobs:
           goarch: ${{ matrix.goarch }}
           binary_name: slack-bot
           project_path: "./cmd/bot"
+  push_to_registry:
+    name: Push Docker image to GitHub Packages
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v2
+      - name: Push to GitHub Packages
+        uses: docker/build-push-action@v1
+        with:
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+          registry: docker.pkg.github.com
+          repository: innogames/slack-bot/slack-bot
+          tag_with_ref: true

.github/workflows/test.yaml

@@ -1,10 +1,11 @@
+name: Test
+
 on:
   push:
     branches:
       - master
   pull_request:
 
-name: Test
 jobs:
   test:
     strategy:

Dockerfile

@@ -3,7 +3,7 @@ FROM golang:1.15-alpine as builder
 WORKDIR /code/
 COPY . ./
 
-RUN apk add git
+RUN apk add git build-base
 RUN go build -trimpath -ldflags="-s -w" -o /app cmd/bot/main.go
 
 FROM alpine:latest as alpine