diff --git a/ghostscript/Dockerfile b/ghostscript/Dockerfile
index 9d99dc0..da7d4c0 100644
--- a/ghostscript/Dockerfile
+++ b/ghostscript/Dockerfile
@@ -2,7 +2,6 @@ FROM alpine:latest
 LABEL maintainer "Jessie Frazelle <jess@linux.com>"
 
 RUN apk --no-cache add \
-	--repository https://dl-3.alpinelinux.org/alpine/edge/main/ \
 	ghostscript
 
 ENTRYPOINT ["gs"]
diff --git a/troff/Dockerfile b/troff/Dockerfile
new file mode 100644
index 0000000..e156323
--- /dev/null
+++ b/troff/Dockerfile
@@ -0,0 +1,7 @@
+FROM alpine:latest
+LABEL maintainer "Jessie Frazelle <jess@linux.com>"
+
+RUN apk --no-cache add \
+	heirloom-doctools
+
+ENTRYPOINT ["troff"]