Switch to custom fc repo; Add build versions

Author: ValentaTomas

README.md

@@ -14,16 +14,19 @@ This project automates the building of custom Firecracker. It supports building
     - Edit `firecracker_versions.txt` to specify which kernel versions to build (one per line, e.g., `<last_tag-prelease>-<first-8-letters-of-the-specific-commit>`).
 
 2. **Build:**
+
    ```sh
    make build
    # or directly
    ./build.sh
    ```
+
    The built kernels will be placed in `builds/vmlinux-<version>/vmlinux.bin`.
 
 ## Development Workflow
+
 - On every push, GitHub Actions will automatically build the kernels and save it as an artifact.
 
 ## License
 
-This project is licensed under the Apache License 2.0. See [LICENSE](LICENSE) for details. 
+This project is licensed under the Apache License 2.0. See [LICENSE](LICENSE) for details.

build.sh

@@ -2,6 +2,8 @@
 
 set -euo pipefail
 
+FIRECRACKER_REPO_URL="https://github.com/e2b-dev/firecracker.git"
+
 function build_version {
   local version=$1
   echo "Starting build for Firecracker commit: $version"
@@ -22,12 +24,12 @@ function build_version {
 }
 
 echo "Cloning the Firecracker repository"
-git clone https://github.com/firecracker-microvm/firecracker.git firecracker
+git clone $FIRECRACKER_REPO_URL firecracker
 cd firecracker
 
 grep -v '^ *#' <../firecracker_versions.txt | while IFS= read -r version; do
   build_version "$version"
 done
 
 cd ..
-rm -rf firecracker
+rm -rf firecracker

firecracker_versions.txt

@@ -1,2 +1,4 @@
 v1.10.1
-v1.12.1
+v1.12.1
+v1.10.1_99e280c5
+v1.12.1_0bb99c51