[pdal] filters.attributes reference failing and libpcl missing when using docker build v1.4

[Michael Rosen]

I'm following the workshop presentation using the docker build of pdal 1.4
(I'm on  linux mint 18).  I find the following:

1.  following the "analysis / clipping" exercise, it seems that
filters.attribute filter stage is failing:

msr at msr-linux ~ $ sudo docker run -v /home/msr/PDAL_workshop/:/data -t
pdal/pdal:1.4 pdal pipeline
 /data/exercises/analysis/clipping/clipping.json
PDAL: Couldn't create filter stage of type 'filters.attribute'.

There's a relevant pull request (https://github.com/PDAL/PDAL/pull/1171)
but no indication of what to do instead.

2.  I thought perhaps "pdal --drivers" would shed some light on the
situation. Sadly, when I did, pdal failed to load:

msr at msr-linux ~ $ sudo docker run -v /home/msr/PDAL_workshop/:/data -t
pdal/pdal:1.4 pdal --drivers
(PDAL Error) Can't load library /usr/lib/libpdal_plugin_reader_pcd.so:
Failed to load "/usr/lib/libpdal_plugin_reader_pcd.so":
/usr/lib/libpcl_io.so.1.8: undefined symbol:
_ZNSt8ios_base7failureC1EPKcRKSt10error_code(PDAL Error) Plugin
'/usr/lib/libpdal_plugin_reader_pcd.so' found but failed to load: Failed to
load "/usr/lib/libpdal_plugin_reader_pcd.so": /usr/lib/libpcl_io.so.1.8:
undefined symbol: _ZNSt8ios_base7failureC1EPKcRKSt10error_code

I tried installing libpcl1.7 (which is what apt wants to put down) but it
didn't help.

I'll appreciate any guidance.

msr
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