Create docker-publish.yml

Adding github actions for dockerhub publishing

Author: xtr0py

.github/workflows/docker-publish.yml

@@ -0,0 +1,54 @@
+name: Build
+
+on:
+  push:
+    workflow_dispatch:
+    inputs:
+      dnscrypt-proxy-release:
+        description: 'DNSCrypt Proxy Release'
+        required: true
+
+env:
+  REGISTRY: docker.io
+  IMAGE_NAME: xtr0py/dnscrypt-proxy-2-docker
+
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    env:
+      DNSCRYPT_PROXY_VERSION: ${{ github.event.inputs.version }}
+     
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Setup default version
+        run: echo "DNSCRYPT_PROXY_VERSION=2.0.45" >> $GITHUB_ENV
+        if: ${{ env.DNSCRYPT_PROXY_VERSION == '' }}
+
+      - name: Setup Docker buildx
+        uses: docker/setup-buildx-action@v1
+
+
+      # Login against a Docker registry except on PR
+      - name: Log into registry ${{ env.REGISTRY }}
+        uses: docker/login-action@v1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+
+      # Build and push Docker image with Buildx (don't push on PR)
+      # https://github.com/docker/build-push-action
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          platforms: linux/amd64
+          build-args: VERSION=${{ env.DNSCRYPT_PROXY_VERSION }} 
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest,${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.DNSCRYPT_PROXY_VERSION }}
+          push: true