feat: build F3 sidecar FFI in Dockerfile

.github/workflows/docker.yml

@@ -24,7 +24,7 @@ jobs:
   build-and-push-docker-image:
     # Run the job only if the PR is not a draft.
     # This is done to limit the runner cost.
-    if: github.event.pull_request.draft == false
+    # if: github.event.pull_request.draft == false
     name: Build images and push to GHCR
     # Change to `buildjet-8vcpu-ubuntu-2204` if `fuzzy` is down.
     # runs-on: fuzzy
@@ -83,7 +83,8 @@ jobs:
           labels: ${{ steps.metafat.outputs.labels }}
           push: ${{ github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v') }}
           # Compile Docker image only for AMD64 for a regular PR to save some CI time.
-          platforms: ${{ (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v')) && 'linux/amd64,linux/arm64' || 'linux/amd64' }}
+          # platforms: ${{ (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v')) && 'linux/amd64,linux/arm64' || 'linux/amd64' }}
+          platforms: 'linux/amd64,linux/arm64'
           target: fat-image
 
       # This step yields the following labels

Dockerfile

@@ -30,9 +30,14 @@ RUN apt-get update && \
     apt-get install --no-install-recommends -y build-essential clang curl git ca-certificates
 RUN update-ca-certificates
 
+# install Rust
 RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --no-modify-path --profile minimal
 ENV PATH="/root/.cargo/bin:${PATH}"
 
+# install Go. Note that F3 sidecar is not enabled for arm64, see `build.rs`
+RUN curl -sSL https://raw.githubusercontent.com/voidint/g/master/install.sh | bash
+RUN "${HOME}/.g/bin/g" install 1.21 && ln -sf "${HOME}/.g/go/bin/go" /usr/local/bin/go && go version
+
 # Copy the cross-compilation scripts 
 COPY --from=xx / /
 
@@ -46,9 +51,6 @@ RUN xx-apt-get update && \
 WORKDIR /forest
 COPY . .
 
-# TODO(forest): https://github.com/ChainSafe/forest/issues/4758
-ENV FOREST_F3_SIDECAR_FFI_BUILD_OPT_OUT=1
-
 # Install Forest. Move it out of the cache for the prod image.
 RUN --mount=type=cache,sharing=private,target=/root/.cargo/registry \
     --mount=type=cache,sharing=private,target=/root/.rustup \

build.rs

@@ -27,10 +27,16 @@ fn is_docs_rs() -> bool {
     std::env::var("DOCS_RS").is_ok()
 }
 
+// Note: arm64 is disabled for now as cross-compilation is not yet supported in rust2go
 fn is_sidecar_ffi_enabled() -> bool {
-    // Opt-out building the F3 sidecar staticlib
     match std::env::var("FOREST_F3_SIDECAR_FFI_BUILD_OPT_OUT") {
         Ok(value) => !matches!(value.to_lowercase().as_str(), "1" | "true"),
-        _ => true,
+        _ => {
+            if cfg!(target_arch = "x86_64") {
+                true
+            } else {
+                false
+            }
+        }
     }
 }