Add templates in docker image

docker/Dockerfile

@@ -1,3 +1,6 @@
+##
+## stage 1 : Build
+##
 FROM golang:1.11 AS build
 
 # git clone https://github.com/glenux/trello2mail /app
@@ -6,14 +9,19 @@ COPY . /app
 WORKDIR /app
 RUN CGO_ENABLED=0 go build -v ./...
 
-FROM alpine:3.7
+
+##
+## Stage 2 : Runtime
+## 
+FROM alpine:3.7 AS runtime
 RUN apk update \
     && apk add --no-cache dcron tzdata ca-certificates bash \
     && rm -rf /var/cache/apk/*
 
 RUN mkdir /app
 COPY --from=build /app/trello2mail /app/
-COPY --from=build /app/docker/trello2mail.cron /app/
+COPY docker/trello2mail.cron /app/
+COPY templates /app/
 
 CMD ["/bin/sh", "-c", "/usr/bin/crontab /app/trello2mail.cron && /usr/sbin/crond -f"]