Update Linux build environment to include CI tools

Add `git` to help with checkout from within the container, so checkout doesn't need to fall back on the REST API. This is particularly relevant for projects that use OP2Utility as a submodule, and wish to use the build image either directly or as a base image. They may want to use the `submodules: recursive` option, which requires `git`.

Add `ca-certificates` so secure connections can be made.

Author: DanRStevens

.github/workflows/buildDockerBuildEnv.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     env:
       buildPath: dockerBuildEnv/
-      imageName: ghcr.io/outpostuniverse/op2utility:1.3
+      imageName: ghcr.io/outpostuniverse/op2utility:1.4
 
     steps:
       - uses: actions/checkout@v6

dockerBuildEnv/Dockerfile

@@ -13,6 +13,8 @@ RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-ins
     build-essential \
     clang \
     cmake \
+    git \
+    ca-certificates \
     libgtest-dev \
     libgmock-dev \
   && rm -rf /var/lib/apt/lists/*