switch to secret access token for auth

.github/workflows/advtrains.yml

@@ -13,4 +13,9 @@ jobs:
     - uses: actions/checkout@v1
 
     - name: mirror
-      run: ./mirror.sh https://git.bananach.space/advtrains.git git@github.com:minetest-mirrors/advtrains.git master
+      run: ./mirror.sh
+      env:
+        source_repo: https://git.bananach.space/advtrains.git
+        github_repo: advtrains.git
+        branch: master
+        access_token: ${{ secrets.ACCESS_TOKEN }}

.github/workflows/digistuff.yml

@@ -1,4 +1,4 @@
-name: advtrains
+name: digistuff
 
 on:
   schedule:
@@ -13,4 +13,9 @@ jobs:
     - uses: actions/checkout@v1
 
     - name: mirror
-      run: ./mirror.sh https://cheapiesystems.com/git/digistuff git@github.com:minetest-mirrors/digistuff.git master
+      run: ./mirror.sh
+      env:
+        source_repo: https://cheapiesystems.com/git/digistuff
+        github_repo: digistuff.git
+        branch: master
+        access_token: ${{ secrets.ACCESS_TOKEN }}

mirror.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-git clone $1 gh_repo
+git clone https://${access_token}@github.com/minetest-mirrors/${github_repo} gh_repo
 cd gh_repo
-git pull $2 $3
-git push origin $3
+git pull ${source_repo} ${branch}
+git push origin ${branch}