delete converted file

Dockerfile

@@ -0,0 +1,14 @@
+FROM golang:1.12-alpine as builder
+WORKDIR /data
+COPY . .
+RUN apk add --no-cache make git ca-certificates && \
+  make
+
+FROM alpine:latest
+RUN apk add --no-cache ca-certificates
+WORKDIR /data
+COPY --from=builder /data/convert-webp /usr/bin
+COPY config.default.yml config.yml
+EXPOSE 10230
+VOLUME ["/img-src", "/img-dist"]
+CMD ["/usr/bin/convert-webp", "-f", "/data/config.yml"]

main.go

@@ -89,6 +89,9 @@ func procFile(loc string) {
 		return
 	}
 	go func(loc string) {
+		defer func() {
+			os.Remove(loc)
+		}()
 		fin := waitFile(loc)
 		if fin {
 			log.Println("file write ok")