Fixes files owned by root

dist/Dockerfile

@@ -1,6 +1,10 @@
 ARG IMAGE
 FROM $IMAGE
 
+ARG UNAME=runner
+ARG UID=1000
+ARG GID=1000
+
 LABEL "com.github.actions.name"="Unity - Builder"
 LABEL "com.github.actions.description"="Build Unity projects for different platforms."
 LABEL "com.github.actions.icon"="box"
@@ -10,6 +14,12 @@ LABEL "repository"="http://github.com/webbertakken/unity-actions"
 LABEL "homepage"="http://github.com/webbertakken/unity-actions"
 LABEL "maintainer"="Webber Takken <webber@takken.io>"
 
+RUN bash -c 'mkdir -p /github/{home,workflow,workspace}' && chown $UID:$GID -R /github/
+RUN getent group $GID || groupadd -g $GID $UNAME
+RUN id -u $UID &>/dev/null || useradd -m -u $UID -g $GID -s /bin/bash -d /github/home $UNAME
+
+RUN chown $UID:$GID -R /opt/unity/
+
 ADD default-build-script /UnityBuilderAction
 ADD steps /steps
 RUN chmod -R +x /steps
@@ -18,3 +28,5 @@ RUN chmod +x /entrypoint.sh
 RUN ls
 
 ENTRYPOINT ["/entrypoint.sh"]
+
+USER $UID:$GID

dist/steps/activate.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+echo "Exporting HOME as /github/home"
+export HOME=/github/home
+
 if [[ -n "$UNITY_LICENSE" ]] || [[ -n "$UNITY_LICENSE_FILE" ]]; then
   #
   # PERSONAL LICENSE MODE

src/index.ts

@@ -26,7 +26,13 @@ async function run() {
       // default and local case
       default:
         core.info('Building locally');
-        builtImage = await Docker.build({ path: actionFolder, dockerfile, baseImage });
+        builtImage = await Docker.build({
+          path: actionFolder,
+          dockerfile,
+          baseImage,
+          uid: buildParameters.uid,
+          gid: buildParameters.gid,
+        });
         await Docker.run(builtImage, { workspace, ...buildParameters });
         break;
     }

src/model/build-parameters.ts

@@ -1,3 +1,4 @@
+import os from 'os';
 import AndroidVersioning from './android-versioning';
 import Input from './input';
 import Platform from './platform';
@@ -14,10 +15,13 @@ class BuildParameters {
 
     const androidVersionCode = AndroidVersioning.determineVersionCode(buildVersion, Input.androidVersionCode);
 
+    const { uid, gid } = os.userInfo();
+
     return {
       version: unityVersion,
       customImage: Input.customImage,
-
+      uid,
+      gid,
       runnerTempPath: process.env.RUNNER_TEMP,
       platform: Input.targetPlatform,
       projectPath: Input.projectPath,

src/model/docker.ts

@@ -1,15 +1,18 @@
+import fs from 'fs';
 import { exec } from '@actions/exec';
 import ImageTag from './image-tag';
 
 class Docker {
   static async build(buildParameters, silent = false) {
-    const { path, dockerfile, baseImage } = buildParameters;
+    const { path, dockerfile, baseImage, uid, gid } = buildParameters;
     const { version, platform } = baseImage;
 
     const tag = new ImageTag({ repository: '', name: 'unity-builder', version, platform });
     const command = `docker build ${path} \
       --file ${dockerfile} \
       --build-arg IMAGE=${baseImage} \
+      --build-arg UID=${uid} \
+      --build-arg GID=${gid} \
       --tag ${tag}`;
 
     await exec(command, undefined, { silent });
@@ -83,6 +86,9 @@ class Docker {
         --volume "${workspace}":"/github/workspace" \
         ${image}`;
 
+    fs.mkdirSync(`${runnerTempPath}/_github_home`, { recursive: true });
+    fs.mkdirSync(`${runnerTempPath}/_github_workflow`, { recursive: true });
+
     await exec(command, undefined, { silent });
   }
 }