From b53e6471a885cd793bb6f17a0f014d658e872137 Mon Sep 17 00:00:00 2001
From: andrussal <salumets.andrus@gmail.com>
Date: Tue, 2 Dec 2025 06:01:34 +0100
Subject: [PATCH] Trim compose build disk usage

---
 .github/workflows/lint.yml                |  9 ---------
 testing-framework/assets/stack/Dockerfile | 24 ++++++++++++++++-------
 2 files changed, 17 insertions(+), 16 deletions(-)

diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index eafcc41..4c31c39 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -235,15 +235,6 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-cargo-
 
-      - name: Cache target directory
-        if: env.ACT != 'true'
-        uses: actions/cache@v4
-        with:
-          path: target
-          key: ${{ runner.os }}-target-compose-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-target-compose-
-
       - name: Install circuits for host build
         env:
           NOMOS_CIRCUITS_PLATFORM: linux-x86_64
diff --git a/testing-framework/assets/stack/Dockerfile b/testing-framework/assets/stack/Dockerfile
index 2a8fc7c..1e537b2 100644
--- a/testing-framework/assets/stack/Dockerfile
+++ b/testing-framework/assets/stack/Dockerfile
@@ -74,7 +74,8 @@ RUN mkdir -p /opt/circuits && \
     fi
 
 ENV NOMOS_CIRCUITS=/opt/circuits
-ENV CARGO_TARGET_DIR=/workspace/target
+ENV CARGO_TARGET_DIR=/tmp/target
+ENV CARGO_INCREMENTAL=0
 
 # Fetch the nomos-node sources pinned in Cargo.lock and build the runtime binaries.
 RUN if [ ! -d /workspace/nomos-node ]; then \
@@ -85,11 +86,20 @@ RUN if [ ! -d /workspace/nomos-node ]; then \
     git checkout 2f60a0372c228968c3526c341ebc7e58bbd178dd && \
     git reset --hard && git clean -fdx && \
     cargo build --all-features --bins && \
-    rm -rf /workspace/nomos-node/target/debug/incremental
+    rm -rf ${CARGO_TARGET_DIR}/debug/incremental
 
 # Build cfgsync binaries from this workspace.
 RUN cargo build --all-features --manifest-path /workspace/testing-framework/tools/cfgsync/Cargo.toml --bins
 
+# Collect only the binaries and drop the build directory to keep layers small.
+RUN mkdir -p /workspace/artifacts && \
+    cp ${CARGO_TARGET_DIR}/debug/nomos-node /workspace/artifacts/ && \
+    cp ${CARGO_TARGET_DIR}/debug/nomos-executor /workspace/artifacts/ && \
+    cp ${CARGO_TARGET_DIR}/debug/nomos-cli /workspace/artifacts/ && \
+    cp ${CARGO_TARGET_DIR}/debug/cfgsync-server /workspace/artifacts/ && \
+    cp ${CARGO_TARGET_DIR}/debug/cfgsync-client /workspace/artifacts/ && \
+    rm -rf ${CARGO_TARGET_DIR}
+
 # ===========================
 # NODE IMAGE
 # ===========================
@@ -112,11 +122,11 @@ RUN apt-get update && apt-get install -yq \
 
 COPY --from=builder /opt/circuits /opt/circuits
 
-COPY --from=builder /workspace/target/debug/nomos-node /usr/bin/nomos-node
-COPY --from=builder /workspace/target/debug/nomos-executor /usr/bin/nomos-executor
-COPY --from=builder /workspace/target/debug/nomos-cli /usr/bin/nomos-cli
-COPY --from=builder /workspace/target/debug/cfgsync-server /usr/bin/cfgsync-server
-COPY --from=builder /workspace/target/debug/cfgsync-client /usr/bin/cfgsync-client
+COPY --from=builder /workspace/artifacts/nomos-node /usr/bin/nomos-node
+COPY --from=builder /workspace/artifacts/nomos-executor /usr/bin/nomos-executor
+COPY --from=builder /workspace/artifacts/nomos-cli /usr/bin/nomos-cli
+COPY --from=builder /workspace/artifacts/cfgsync-server /usr/bin/cfgsync-server
+COPY --from=builder /workspace/artifacts/cfgsync-client /usr/bin/cfgsync-client
 
 ENV NOMOS_CIRCUITS=/opt/circuits