feat: add caddy image

.forgejo/workflows/image_builds.yaml

@@ -13,6 +13,7 @@ jobs:
       matrix:
         image:
           - renovate
+          - caddy
     runs-on: ubuntu-latest
     steps:
       - name: Checkout

caddy/Dockerfile

@@ -0,0 +1,15 @@
+FROM docker.io/golang:1.23-alpine AS builder
+
+WORKDIR /work
+
+RUN go install github.com/caddyserver/xcaddy/cmd/xcaddy@latest
+
+RUN xcaddy build \
+    --output ./caddy \
+    --with github.com/sagikazarmark/caddy-fs-s3
+
+FROM scratch
+
+COPY --from=builder /work/caddy /caddy
+
+ENTRYPOINT ["/caddy"]