add kagent service server

.github/workflows/Dockerfile.aarch64-unknown-linux-musl

@@ -2,7 +2,7 @@ FROM ghcr.io/kentik/cross:aarch64-unknown-linux-musl
 
 ARG LIBPCAP=libpcap-1.10.0
 
-RUN apt-get update && apt-get install -y bison flex capnproto
+RUN apt-get update && apt-get install -y bison flex capnproto libprotobuf-dev protobuf-compiler
 
 RUN mkdir /work && cd /work
 RUN curl -L -O https://www.tcpdump.org/release/$LIBPCAP.tar.gz

.github/workflows/Dockerfile.armv7-unknown-linux-musleabihf

@@ -2,7 +2,7 @@ FROM ghcr.io/kentik/cross:armv7-unknown-linux-musleabihf
 
 ARG LIBPCAP=libpcap-1.10.0
 
-RUN apt-get update && apt-get install -y bison flex capnproto
+RUN apt-get update && apt-get install -y bison flex capnproto libprotobuf-dev protobuf-compiler
 
 RUN mkdir /work && cd /work
 RUN curl -L -O https://www.tcpdump.org/release/$LIBPCAP.tar.gz

.github/workflows/Dockerfile.x86_64-unknown-freebsd

@@ -1,5 +1,11 @@
 FROM ghcr.io/cross-rs/x86_64-unknown-freebsd:0.2.4
 
+ARG PROTOBUF=v28.2/protoc-28.2-linux-x86_64.zip
+
+RUN apt-get update && apt-get install -y capnproto bsdtar
+
 RUN curl --retry 3 -sSfL http://ftp.freebsd.org/pub/FreeBSD/releases/amd64/14.1-RELEASE/base.txz | tar xJvf - -C /usr/local/x86_64-unknown-freebsd12/lib --strip-components 3 ./usr/lib/libkvm.a ./usr/lib/libdevstat.a ./usr/lib/libmemstat.a
 
-RUN apt-get update && apt-get install -y capnproto
+RUN curl --retry 3 -sSfL https://github.com/protocolbuffers/protobuf/releases/download/$PROTOBUF | bsdtar -xvf - -C /usr/local
+
+

.github/workflows/Dockerfile.x86_64-unknown-linux-musl

@@ -2,7 +2,7 @@ FROM ghcr.io/kentik/cross:x86_64-unknown-linux-musl
 
 ARG LIBPCAP=libpcap-1.10.0
 
-RUN apt-get update && apt-get install -y bison flex capnproto
+RUN apt-get update && apt-get install -y bison flex capnproto libprotobuf-dev protobuf-compiler
 
 RUN mkdir /work && cd /work
 RUN curl -L -O https://www.tcpdump.org/release/$LIBPCAP.tar.gz