diff --git a/Dockerfile b/Dockerfile
index 916b263..35e0c4c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,8 @@ COPY . .
 
 RUN go get -v && make build
 
+WORKDIR /go
+RUN tar -c src | bzip2 > go-src.tbz2
 # this container doesn't do anything except hold the build artifact
 # and make sure it compiles.
 
@@ -12,6 +14,9 @@ FROM alpine
 
 COPY --from=builder /go/src/github.com/sneak/fediverse-archive/fediverse-archive /bin/fediverse-archive
 
+# put the source in there too for safekeeping
+COPY --from=builder /go/go-src.tbz2 /usr/local/src/go-src.tbz2
+
 CMD /bin/fediverse-archive
 
 # FIXME add testing