Lets commit entire git history into an image and update incrementally - create git-cache-updater service & git-cache/update-git-cache.cmd updating dcr.devsh.eu/nabla/source/git-cache:latest with entire Nabla history locally (currently full master only, but I'm going to track all branches there)

Author: AnastaZIuk

docker/git-cache/Dockerfile

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+# escape=`
+
+ARG BASE_IMAGE=mcr.microsoft.com/windows/servercore:ltsc2022-amd64
+
+FROM ${BASE_IMAGE}
+
+SHELL ["cmd", "/S", "/C"]
+
+RUN ` 
+    # Install Chocolatey
+    `
+    powershell -Command "Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))"
+
+RUN `
+    # Install Git
+    `
+    choco install -y git --version 2.43.0
+
+RUN `
+	# Install CMake
+	`
+	curl -SL --output cmake.zip https://github.com/Kitware/CMake/releases/download/v3.31.0/cmake-3.31.0-windows-x86_64.zip `
+	`
+	&& mkdir "./cmake" `
+	`
+	&& tar -xf cmake.zip -C "./cmake" `
+	`
+	&& del /q cmake.zip
+
+WORKDIR C:\gitcache
+
+RUN `
+    # Post environment setup
+    `
+    git config --system protocol.*.allow always `
+    `
+    && git config --system url."https://github.com/".insteadOf "git@github.com:" `
+    `
+    && git config --system --add safe.directory * `
+    `
+    && setx THIS_PROJECT_GIT_CACHE "C:\gitcache" `
+    `
+    && git init `
+    `
+    && git remote add origin https://github.com/Devsh-Graphics-Programming/Nabla.git 
+
+ENTRYPOINT ["cmd.exe", "/K"]

docker/git-cache/compose.yml

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+services:
+  git-cache-updater:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: dcr.devsh.eu/nabla/source/git-cache:latest
+    container_name: git.cache.update

docker/git-cache/update-git-cache.cmd

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+@echo off
+REM Set cache image reference
+set IMAGE_NAME=dcr.devsh.eu/nabla/source/git-cache:latest
+
+REM Start the git-cache-updater container in detached mode and capture the container ID
+set CONTAINER_ID=
+for /f "delims=" %%i in ('docker-compose run --remove-orphans -d git-cache-updater') do set CONTAINER_ID=%%i
+
+REM Check if the container started successfully
+if "%CONTAINER_ID%"=="" (
+    echo Failed to start the git-cache-updater container.
+    exit /b 1
+)
+
+echo Started container with ID %CONTAINER_ID%
+
+REM Fetch master commits
+docker exec -i -t %CONTAINER_ID% git fetch origin master
+if %errorlevel% neq 0 (
+    echo "Error: git fetch failed"
+    docker stop %CONTAINER_ID%
+    exit /b %errorlevel%
+)
+
+REM Checkout master. TODO: since it happens at runtime I could loop over /remotes' CURRENT branches and track all history
+docker exec -i -t %CONTAINER_ID% git checkout master -f
+if %errorlevel% neq 0 (
+    echo "Error: git checkout failed"
+    docker stop %CONTAINER_ID%
+    exit /b %errorlevel%
+)
+
+REM Update & checkout submodules with CMake
+docker exec -i -t %CONTAINER_ID% "C:\cmake\cmake-3.31.0-windows-x86_64\bin\cmake" -P cmake\submodules\update.cmake
+if %errorlevel% neq 0 (
+    echo "Error: CMake submodule update failed"
+    docker stop %CONTAINER_ID%
+    exit /b %errorlevel%
+)
+
+REM Stop the container before committing
+docker stop %CONTAINER_ID%
+if %errorlevel% neq 0 (
+    echo "Error: failed to stop container"
+    exit /b %errorlevel%
+)
+
+REM Commit the updated container as a new image
+docker commit %CONTAINER_ID% %IMAGE_NAME%
+if %errorlevel% neq 0 (
+    echo "Error: failed to commit the container"
+    exit /b %errorlevel%
+)
+
+echo Git cache updated and committed as %IMAGE_NAME%.
+
+REM Remove the update container
+docker rm %CONTAINER_ID%
+if %errorlevel% neq 0 (
+    echo "Error: failed to remove the update container"
+    exit /b %errorlevel%
+)
+
+echo Removed %CONTAINER_ID% update container.