Fix 'tk show' and 'tk diff' in docker image

bastjan · web-flow · commit 45f94674134f · 2020-03-05T16:07:19.000+01:00
Busybox less does not support `--RAW-CONTROL-CHARS`; `tk show` and `tk diff` fail in a unmodified alpine image.
diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,8 @@
 FROM alpine
+
+# less with `--RAW-CONTROL-CHARS` is required for tk show/ tk diff
+RUN RUN apk add --no-cache less
+
 COPY tk /usr/local/bin/tk
 ENTRYPOINT ["/usr/local/bin/tk"]
 
