add container build and upload action

.forgejo/workflows/build.yml

@@ -0,0 +1,19 @@
+name: Upload the container
+
+on:
+  workflow_dispatch:
+  push:
+
+
+jobs:
+  build-and-upload:
+    runs-on: docker
+    steps:
+      - name: Checkout code
+        uses: https://git.dzuchun.ing/actions/checkout@v1
+
+      - name: Build and push the image
+        uses: https://git.dzuchun.ing/actions/container-upload@v0.4.2
+        with:
+          registry-user: actions
+          token: ${{ secrets.REGISTRY_PAT }}

Dockerfile

@@ -1,10 +1,12 @@
-FROM git.dzuchun.ing/actions/alpine:latest AS builder
+ARG ALPINE_VERSION=1.0.0-alpine-3.23.3
+
+FROM git.dzuchun.ing/actions/alpine:$ALPINE_VERSION AS builder
 
 # install docker cli
 RUN apk add --no-cache docker-cli; apk cache clean
 
 # add separate step to avoid making layers
-FROM git.dzuchun.ing/actions/alpine:latest
+FROM git.dzuchun.ing/actions/alpine:$ALPINE_VERSION
 
 COPY --from=builder . .