fix(docker): mount GitHub environment files directory into containers

- Mount GitHub environment files directory containing GITHUB_ENV, GITHUB_OUTPUT, GITHUB_PATH, and GITHUB_STEP_SUMMARY
- Resolves Docker container exit code -1 when writing to $GITHUB_ENV
- Update volume mapping in both step execution contexts in engine.rs
- Tested on macOS with Docker Desktop

Closes: Issue where echo "VAR=value" >> "$GITHUB_ENV" fails in Docker runtime

clippy-test.yml

@@ -1,12 +0,0 @@
-name: Clippy Test
-on: [push]
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Test secrets after clippy fixes
-        env:
-          TEST_VAR: ${{ secrets.TEST_SECRET }}
-        run: |
-          echo "Secret length: ${#TEST_VAR}"

crates/executor/src/engine.rs

@@ -1538,7 +1538,16 @@ async fn execute_step(ctx: StepExecutionContext<'_>) -> Result<StepResult, Execu
                 let container_workspace = Path::new("/github/workspace");
 
                 // Set up volume mapping from host working dir to container workspace
-                let volumes: Vec<(&Path, &Path)> = vec![(ctx.working_dir, container_workspace)];
+                let mut volumes: Vec<(&Path, &Path)> = vec![(ctx.working_dir, container_workspace)];
+
+                // Also mount the GitHub environment files directory if GITHUB_ENV is set
+                if let Some(github_env_path) = ctx.job_env.get("GITHUB_ENV") {
+                    if let Some(github_dir) = Path::new(github_env_path).parent() {
+                        if let Some(github_parent) = github_dir.parent() {
+                            volumes.push((github_parent, github_parent));
+                        }
+                    }
+                }
 
                 let output = ctx
                     .runtime
@@ -1687,7 +1696,16 @@ async fn execute_step(ctx: StepExecutionContext<'_>) -> Result<StepResult, Execu
         let container_workspace = Path::new("/github/workspace");
 
         // Set up volume mapping from host working dir to container workspace
-        let volumes: Vec<(&Path, &Path)> = vec![(ctx.working_dir, container_workspace)];
+        let mut volumes: Vec<(&Path, &Path)> = vec![(ctx.working_dir, container_workspace)];
+
+        // Also mount the GitHub environment files directory if GITHUB_ENV is set
+        if let Some(github_env_path) = ctx.job_env.get("GITHUB_ENV") {
+            if let Some(github_dir) = Path::new(github_env_path).parent() {
+                if let Some(github_parent) = github_dir.parent() {
+                    volumes.push((github_parent, github_parent));
+                }
+            }
+        }
 
         // Execute the command
         match ctx

final-test.yml

@@ -1,13 +0,0 @@
-name: Final Secrets Test
-on: [push]
-
-jobs:
-  verify-secrets:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Test secrets are working
-        env:
-          SECRET_VAL: ${{ secrets.TEST_SECRET }}
-        run: |
-          echo "Secret length: ${#SECRET_VAL}"
-          echo "All secrets functionality verified!"