add docker edge workflow

.github/workflows/build_docker_edge.yml

@@ -0,0 +1,32 @@
+name: Build and push simple-tls docker edge
+
+on:
+  push:
+
+jobs:
+  release-docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          build-args: |
+            TAG=${{github.ref_name}}
+            REPOSITORY=IrineSistiana/simple-tls
+          platforms: linux/amd64,linux/arm64
+          file: ./Dockerfile_buildx_edge
+          push: true
+          tags: |
+            ${{ secrets.DOCKERHUB_USERNAME }}/simple-tls:edge

Dockerfile_buildx_edge

@@ -0,0 +1,16 @@
+FROM --platform=${TARGETPLATFORM} golang:latest as builder
+ARG REPOSITORY=IrineSistiana/simple-tls
+ARG CGO_ENABLED=0
+
+WORKDIR /root
+RUN git clone https://github.com/${REPOSITORY} simple-tls \
+	&& cd ./simple-tls \
+    && git fetch --all --tags \
+	&& go build -ldflags "-s -w -X main.version=$(git describe --tags --long --always)" -trimpath -o simple-tls
+
+FROM --platform=${TARGETPLATFORM} alpine:latest
+LABEL maintainer="IrineSistiana <github.com/IrineSistiana>"
+
+COPY --from=builder /root/simple-tls/simple-tls /usr/bin/
+
+RUN apk add --no-cache ca-certificates