Support podman in codebuild_build.sh

[mbacchi]

Describe the bug
Podman is an alternative to the Docker container engine, and fully compatible. On Linux it can typically replace docker by aliasing the command such as alias docker=podman. But when using podman, the codebuild_build.sh script does not work out of the box, and in fact I cannot get it to run at all without docker installed.

To Reproduce
Steps to reproduce the behavior:

1. On Fedora Linux (37) Docker is not installed by default. Configure alias docker=podman in ~/.bashrc and spawn a new shell. Run codebuild_build.sh and you get many errors.
2. Use this diff to try to make some minor changes to use podman:

diff -u codebuild_build.sh codebuild_build_new.sh 
--- codebuild_build.sh	2023-10-17 12:48:16.685661350 -0400
+++ codebuild_build_new.sh	2023-10-17 12:48:43.511815689 -0400
@@ -96,12 +96,12 @@
     exit 1
 fi
 
-docker_command="docker run -it "
+docker_command="podman run -it "
 if isOSWindows
 then
     docker_command+="-v //var/run/docker.sock:/var/run/docker.sock -e "
 else
-    docker_command+="-v /var/run/docker.sock:/var/run/docker.sock -e "
+    docker_command+="-v /run/user/1000/podman/podman.sock:/var/run/docker.sock -e "
 fi
 
 docker_command+="\"IMAGE_NAME=$image_name\" -e \

3. When running the script now, I still get an error:

./codebuild_build.sh -i localhost/aws/codebuild/standard:6.0 -a /tmp/artifacts -s ./sourcedir/
Build Command:

podman run -it -v /run/user/1000/podman/podman.sock:/var/run/docker.sock -e "IMAGE_NAME=localhost/aws/codebuild/standard:6.0" -e "ARTIFACTS=/tmp/artifacts" -e "SOURCE=sourcedir" -e "INITIATOR=username" public.ecr.aws/codebuild/local-builds:latest

ERROR: Couldn't connect to Docker daemon at http+docker:https://localhost - is it running?

If it's at a non-standard location, specify the URL with the DOCKER_HOST environment variable.
ERROR: Couldn't connect to Docker daemon at http+docker:https://localhost - is it running?

If it's at a non-standard location, specify the URL with the DOCKER_HOST environment variable.

4. I've also tried setting DOCKER_HOST unsuccessfully.

Expected behavior
Should be able to run the images needed for the local codebuild build process.

Platform (please complete the following information):

• OS: Fedora Linux 37 (x86)

[baskervilski]

It would be really nice to have this implemented...