FAPI: Add initial implementation of tss2-fapi.so

This implements a new interface and library for the
TCG TSS Feature API specification.

Co-authored-by: Andreas Fuchs <andreas.fuchs@sit.fraunhofer.de>
Co-authored-by: Lukas Jäger <lukas.jaeger@sit.fraunhofer.de>

Signed-off-by: Juergen Repp <juergen.repp@sit.fraunhofer.de>
Signed-off-by: Lukas Jäger <lukas.jaeger@sit.fraunhofer.de>
Signed-off-by: Andreas Fuchs <andreas.fuchs@sit.fraunhofer.de>

diff --git a/Dockerfile b/Dockerfile
index 19301fb..61e07b9 100644
--- a/Dockerfile
+++ b/Dockerfile

@@ -4,6 +4,11 @@
 WORKDIR /tmp/tpm2-tss
 ENV LD_LIBRARY_PATH /usr/local/lib
 
+# Install libjson-c
+RUN apt-get update && apt-get install -y --no-install-recommends \
+       libjson-c-dev \
+       && rm -rf /var/lib/apt/lists/*
+
 # Fuzzing
 FROM base AS fuzzing
 ENV GEN_FUZZ 1