add mastodon

pwgen/Dockerfile

@@ -1,4 +1,11 @@
+FROM golang:1.15 as builder
+COPY vapid.go /vapid.go
+RUN go get -u github.com/SherClockHolmes/webpush-go
+RUN CGO_ENABLED=0 go build -ldflags "-s -w" -o /vapid /vapid.go
+
 FROM alpine:3.12
 
 RUN apk add --no-cache openldap-passwd-pbkdf2 apache2-utils pwgen opendkim-utils coreutils
 COPY dkim-key.sh /dkim-key.sh
+COPY --from=builder /vapid /vapid
+RUN chmod +x /vapid