Docker script for building the 'prod' app

.dockerignore

@@ -1,3 +1,4 @@
 third_party/*
 boost_1_67_0/*
+docker/*
 build-*

docker/bin_build.Dockerfile

@@ -1,4 +1,4 @@
-FROM romange/cpp-dev18 as build_third_party
+FROM romange/cpp-dev18 as third_party
 
 # To allow caching third_party libs via "minimal" build.
 # We do not use ARG here, not even reference it here because otherwise it would cause cache misses
@@ -10,11 +10,20 @@ RUN cmake -L -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER=/usr/bin/g++ -DONLY
 RUN ninja -j4 protobuf_project glog_project sparsehash_project gperf_project zstd_project \
     evhtp_project lz4_project xxhash_project
 
-FROM build_third_party
-# Now we use ARGs.
-ARG TARGET
+FROM third_party as src
+COPY ./ /src/
+RUN mkdir /pkg && cmake -L -DONLY_THIRD_PARTY=OFF -GNinja /src
 
+FROM src as bin
 # Now really building the target. Previous containers will be reused between the builds.
-COPY ./ /src/
-RUN cmake -L -DONLY_THIRD_PARTY=OFF -GNinja /src
-RUN ninja -j4 $TARGET
+ARG TARGET
+
+RUN ninja -j4 $TARGET && strip $TARGET && mv $TARGET /pkg/
+RUN ldd -r /pkg/$TARGET | grep "/build/third_party" | awk '{print $3}' | \
+    while read n; do cp -nH $n /pkg/; done
+
+FROM romange/u18prod
+ARG TARGET
+RUN echo $TARGET
+COPY --from=bin /pkg/ /app/
+RUN ldconfig /app