[Chore] Utilize OCTEZ_EXECUTABLES env var

Problem: `make static` command utilizes `OCTEZ_EXECUTABLES` variable,
which we can use to specify exact binaries to build. Also, it
could be used to build experimental or development binaries.

Solution: Let user provide `OCTEZ_EXECUTABLES` env var and pass
it to the build.

docker/README.md

@@ -29,6 +29,14 @@ Currently supported architectures are: `host` and `aarch64`, so that
 one can build native binaries for current architecture or build `aarch64` binaries on
 `x86_64` machine.
 
+In order to build only specific binaries, or experimental/dev ones, you should specify
+`OCTEZ_EXECUTABLES` env variable:
+```
+export OCTEZ_VERSION="v14.1"
+export OCTEZ_EXECUTABLES="octez-smart-rollup-wasm-debugger octez-protocol-compiler octez-dal-node"
+./docker-static-build.sh
+```
+
 ### Compiling for `aarch64` on `x86_64` prerequisites
 
 Docker image defined in [`Dockerfile.aarch64`](build/Dockerfile.aarch64) uses qemu for

docker/build/Dockerfile

@@ -19,5 +19,6 @@ ENV OPAMYES true
 COPY ./build/build-deps.sh /build-deps.sh
 RUN /build-deps.sh
 COPY ./build/build-tezos.sh /build-tezos.sh
+ARG OCTEZ_EXECUTABLES
 RUN /build-tezos.sh
 RUN upx octez-*

docker/build/Dockerfile.aarch64

@@ -26,5 +26,6 @@ ENV OPAMYES true
 COPY ./build/build-deps.sh /build-deps.sh
 RUN /build-deps.sh
 COPY ./build/build-tezos.sh /build-tezos.sh
+ARG OCTEZ_EXECUTABLES
 RUN /build-tezos.sh
 RUN upx octez-*

docker/docker-static-build.sh

@@ -8,11 +8,18 @@
 
 set -euo pipefail
 
-binaries=("octez-admin-client" "octez-dac-client" "octez-dac-node" "octez-client" "octez-node" "octez-signer" "octez-codec")
+if [ -z ${OCTEZ_EXECUTABLES+x} ]; then
 
-for proto in $(jq -r ".active | .[]" ../protocols.json); do
-    binaries+=("octez-accuser-$proto" "octez-baker-$proto" "octez-smart-rollup-client-$proto" "octez-smart-rollup-node-$proto")
-done
+    binaries=("octez-admin-client" "octez-dac-client" "octez-dac-node" "octez-client" "octez-node" "octez-signer" "octez-codec")
+
+    for proto in $(jq -r ".active | .[]" ../protocols.json); do
+        binaries+=("octez-accuser-$proto" "octez-baker-$proto" "octez-smart-rollup-client-$proto" "octez-smart-rollup-node-$proto")
+    done
+
+    OCTEZ_EXECUTABLES="$( IFS=$' '; echo "${binaries[*]}" )"
+else
+    IFS=' ' read -r -a binaries <<< "$OCTEZ_EXECUTABLES"
+fi
 
 if [[ "${USE_PODMAN-}" == "True" ]]; then
     virtualisation_engine="podman"
@@ -40,7 +47,7 @@ if [[ $arch == "aarch64" && $(uname -m) != "x86_64" ]]; then
     echo "Compiling for aarch64 is supported only from aarch64 and x86_64"
 fi
 
-"$virtualisation_engine" build -t alpine-tezos -f "$docker_file" --build-arg OCTEZ_VERSION="$OCTEZ_VERSION" .
+"$virtualisation_engine" build -t alpine-tezos -f "$docker_file" --build-arg=OCTEZ_VERSION="$OCTEZ_VERSION" --build-arg=OCTEZ_EXECUTABLES="$OCTEZ_EXECUTABLES" .
 container_id="$("$virtualisation_engine" create alpine-tezos)"
 for b in "${binaries[@]}"; do
     "$virtualisation_engine" cp "$container_id:/tezos/$b" "$b"