Add just test commands to be used instead go test (#2014)

+refactor MLS CGO options to include lib from go file, and supply lib
path by env var

.github/workflows/ci.yml

@@ -608,6 +608,8 @@ jobs:
                     --name river_postgres_container
 
         steps:
+            - uses: taiki-e/install-action@just
+
             - name: Cancel previous runs
               if: github.event_name != 'schedule'
               uses: styfle/[email protected]
@@ -682,11 +684,8 @@ jobs:
               run: ./scripts/register-ca.sh
               working-directory: core
 
-            - name: Build MLS libs
-              run: ./scripts/build-mls.sh
-
             - name: Run node tests
-              run: CGO_LDFLAGS="./libmls_lib.a -ldl" go test -race -timeout 24m -v -parallel 1 -count 1 -p 8 ./...
+              run: just test-all -race -timeout 24m -parallel 1 -count 1 -p 8
               working-directory: core
 
     XChain_Integration:

core/Dockerfile

@@ -22,7 +22,7 @@ RUN cp -f ../../target/release/libmls* /build
 
 # Build river_node
 WORKDIR /build
-RUN CGO_LDFLAGS="./libmls_lib.a -ldl" \
+RUN CGO_LDFLAGS="-L/build" \
     go build \
     -trimpath \
     -o /bin/river_node \

core/README.md

@@ -5,7 +5,7 @@ Local [CA](#setting-up-local-ca-for-tls) needs to be provisioned.
 
 To list all available commands:
 
-    just RUN_ENV=multi
+    just
 
 There are two local environments available:
 
@@ -34,12 +34,18 @@ Just start with existing config and binary:
 
     just RUN_ENV=multi start
 
-There are `run` version of commands that wait for Ctrl-C and stop nodes on exit:
+Restart after rebuilding with current changes:
 
-    just RUN_ENV=multi config-and-run
-    just RUN_ENV=multi config-run-tail
-    just RUN_ENV=multi run
-    just RUN_ENV=multi run-and-tail
+    just RUN_ENV=multi restart
+
+# Building and running go tests
+
+MLS lib needs to be built for some tests to run, there are just commands that build and configure lib and then run go tests:
+
+    just test ./...  # Run go test
+    just test-all # Run all go tests from module root
+    just t # Run all tests from current dir
+    just build-mls # Rebuild mls without running tests
 
 # Installing just