Add pkg-config to dockerfiles

Dockerfile

@@ -5,7 +5,7 @@ FROM ubuntu:${TAG} AS build
 ### Build stage
 
 # Install curl and git and simplex-chat dependencies
-RUN apt-get update && apt-get install -y curl git build-essential libgmp3-dev zlib1g-dev llvm-12 llvm-12-dev libnuma-dev libssl-dev
+RUN apt-get update && apt-get install -y curl git build-essential libgmp3-dev zlib1g-dev llvm-12 llvm-12-dev libnuma-dev libssl-dev pkgconf
 
 # Specify bootstrap Haskell versions
 ENV BOOTSTRAP_HASKELL_GHC_VERSION=9.6.3

Dockerfile.build

@@ -47,7 +47,8 @@ RUN apt-get update && \
                        python3 \
                        python3-venv \
                        xz-utils \
-                       unzip &&\
+                       unzip \
+                       pkgconf &&\
     ln -s /bin/fusermount /bin/fusermount3 || :
 
 # Install Java Coretto