/{docker,go,integration-tests}: install git, remote .git suffix on clone in server

docker/Dockerfile

@@ -6,6 +6,7 @@ ARG DOLT_VERSION
 RUN apt update -y && \
     apt install -y \
         curl \
+        git \
         tini \
         ca-certificates && \
     apt clean && \

docker/serverDockerfile

@@ -4,7 +4,7 @@ FROM debian:bookworm-slim AS base
 ENV DEBIAN_FRONTEND=noninteractive
 RUN apt-get update -y && \
     apt-get install -y --no-install-recommends \
-        curl tini ca-certificates && \
+        curl git tini ca-certificates && \
     rm -rf /var/lib/apt/lists/*