Make Docker Jobs skip outside the main repository due to fork incompat (#1141)

.github/workflows/docker-hub-develop.yml

@@ -22,6 +22,7 @@ env:
 jobs:
   docker-latest:
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'the-draupnir-project/Draupnir' }}
     permissions:
       id-token: write
       contents: read

.github/workflows/docker-hub-latest.yml

@@ -20,6 +20,7 @@ env:
 jobs:
   docker-release:
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'the-draupnir-project/Draupnir' }}
     permissions:
       id-token: write
       contents: read

.github/workflows/docker-hub-release.yml

@@ -20,6 +20,7 @@ env:
 jobs:
   docker-release:
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'the-draupnir-project/Draupnir' }}
     permissions:
       id-token: write
       contents: read