commit 23c54e7a4b82fe325d74a181060535b60243208d
Author:     Albrecht Schlosser <albrechts.fltk@online.de>
AuthorDate: Fri Aug 27 13:40:10 2021 +0200
Commit:     Albrecht Schlosser <albrechts.fltk@online.de>
CommitDate: Fri Aug 27 13:49:01 2021 +0200

    GitHub Actions (Linux): add 'apt-get update'
    
    Error was:
    
    E: Failed to fetch http://azure.archive.ubuntu.com/ubuntu/pool/main/m/mesa/libegl-mesa0_21.0.3-0ubuntu0.2~20.04.1_amd64.deb  404  Not Found [IP: 52.147.219.192 80]
    E: Failed to fetch http://azure.archive.ubuntu.com/ubuntu/pool/main/m/mesa/libgl1-mesa-dev_21.0.3-0ubuntu0.2~20.04.1_amd64.deb  404  Not Found [IP: 52.147.219.192 80]
    E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
    Error: Process completed with exit code 100.

 .github/workflows/build.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git .github/workflows/build.yml .github/workflows/build.yml
index b4132d8..f347b65 100644
--- .github/workflows/build.yml
+++ .github/workflows/build.yml
@@ -18,7 +18,7 @@ jobs:
     - uses: actions/checkout@v2
 
     - name: install prerequisites
-      run: sudo apt-get install -y libasound2-dev libglew-dev libglu1-mesa-dev libx11-dev libxcursor-dev libxft-dev libxinerama-dev
+      run: sudo apt-get update -y && sudo apt-get install -y libasound2-dev libglew-dev libglu1-mesa-dev libx11-dev libxcursor-dev libxft-dev libxinerama-dev
 
     - name: Create Build Environment
       # Some projects don't allow in-source building, so create a separate build directory