Adding mimetic library as a part of unit test build script

This library is used to parse multipart form data of a request
(where the request body contains a series of files separated by
a boundary).

The following commit is one of the use cases of the same.
https://gerrit.openbmc-project.xyz/c/openbmc/bmcweb/+/31030

This library has already been included in meta-openembedded layer.

Having it in the build scripts is needed, for the CI to pass for
commits using this library, independently, without having it
upstreamed in specific recipe files

Signed-off-by: Asmitha Karunanithi <asmitk01@in.ibm.com>
Change-Id: I88393c5ffe9e6f012d7dce51a9c81286437391d6
diff --git a/build-unit-test-docker.sh b/build-unit-test-docker.sh
index 8c53f6c..fcfce11 100755
--- a/build-unit-test-docker.sh
+++ b/build-unit-test-docker.sh
@@ -260,7 +260,8 @@
     libgpiod-dev \
     device-tree-compiler \
     cppcheck \
-    libpciaccess-dev
+    libpciaccess-dev \
+    libmimetic-dev
 
 RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 1000 \
   --slave /usr/bin/g++ g++ /usr/bin/g++-10 \