Add Linux docker setup

.dockerignore

@@ -0,0 +1,6 @@
+.git/
+.build/
+.swiftpm/
+.release/
+bazel-*
+docker/

.mise/tasks/scan-linux

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+set -e
+
+export DOCKER_CLI_HINTS=false
+docker build -t periphery -f docker/Dockerfile.linux .
+docker run --rm -t periphery scan "$@"

Package.swift

@@ -6,7 +6,7 @@ var dependencies: [Package.Dependency] = [
     .package(url: "https://github.com/jpsim/Yams", from: "5.0.0"),
     .package(url: "https://github.com/tadija/AEXML", from: "4.0.0"),
     .package(url: "https://github.com/apple/swift-argument-parser", from: "1.0.0"),
-    .package(url: "https://github.com/kateinoigakukun/swift-indexstore", from: "0.3.0"),
+    .package(url: "https://github.com/ileitch/swift-indexstore", revision: "a8a375fa31d7f861a8ee44a4d3acab9ecaf742ea"),
     .package(url: "https://github.com/apple/swift-syntax", from: "600.0.1"),
     .package(url: "https://github.com/ileitch/swift-filename-matcher", from: "2.0.0"),
 ]

Sources/Shared/Shell.swift

@@ -78,8 +78,8 @@ open class Shell {
 
         process.launch()
 
-        var stdout = ""
-        var stderr = ""
+        var standardOutput = ""
+        var standardError = ""
 
         if let stdoutData = try stdoutPipe?.fileHandleForReading.readToEnd() {
             guard let stdoutStr = String(data: stdoutData, encoding: .utf8)
@@ -90,7 +90,7 @@ open class Shell {
                     encoding: .utf8
                 )
             }
-            stdout = stdoutStr
+            standardOutput = stdoutStr
         }
 
         if let stderrData = try stderrPipe?.fileHandleForReading.readToEnd() {
@@ -102,11 +102,19 @@ open class Shell {
                     encoding: .utf8
                 )
             }
-            stderr = stderrStr
+            standardError = stderrStr
         }
 
-        process.waitUntilExit()
+        #if os(Linux)
+            // Workaround for https://github.com/swiftlang/swift-corelibs-foundation/issues/5153
+            let semaphore = DispatchSemaphore(value: 0)
+            process.terminationHandler = { _ in semaphore.signal() }
+            semaphore.wait()
+        #else
+            process.waitUntilExit()
+        #endif
+
         ShellProcessStore.shared.remove(process)
-        return (process.terminationStatus, stdout, stderr)
+        return (process.terminationStatus, standardOutput, standardError)
     }
 }

docker/Dockerfile.linux

@@ -0,0 +1,5 @@
+FROM swift:6.0
+WORKDIR /workspace
+COPY . /workspace
+RUN swift build --product periphery
+ENTRYPOINT [".build/debug/periphery"]