Dockerfile fix

-FROM 192.168.0.243:5000/mmm/allied-creation-gateway:20210809
+FROM 192.168.0.243:5000/mmm/allied-creation-gateway:20211210
 ENV APP_DIR $GOPATH/src/project-20210916
 ENV APP_DIR $GOPATH/src/project-20210916
 RUN mkdir -p $APP_DIR
 RUN mkdir -p $APP_DIR
 WORKDIR $APP_DIR/
 WORKDIR $APP_DIR/
 COPY ./pkg pkg
 COPY ./pkg pkg
 COPY ./config config
 COPY ./config config
-COPY ./cmd/pdftopng cmd
+COPY ./cmd/pdftopng cmd/pdftopng
 COPY ./go.mod go.mod
 COPY ./go.mod go.mod
 COPY ./go.sum go.sum
 COPY ./go.sum go.sum
 COPY ./main.go main.go
 COPY ./main.go main.go