feat(docker): minimize base stage (#16)

* install ssh only and copy only once

Signed-off-by: Yutaka Kondo <yutaka.kondo@youtalk.jp>

* install gosu

Signed-off-by: Yutaka Kondo <yutaka.kondo@youtalk.jp>

* fix dir

Signed-off-by: Yutaka Kondo <yutaka.kondo@youtalk.jp>

* revert ansible

Signed-off-by: Yutaka Kondo <yutaka.kondo@youtalk.jp>

---------

Signed-off-by: Yutaka Kondo <yutaka.kondo@youtalk.jp>

docker/autoware-openadk/Dockerfile

@@ -5,22 +5,12 @@ FROM $BASE_IMAGE as base
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 ARG ROS_DISTRO
 
-# Install apt packages
+# Install apt packages and add GitHub to known hosts for private repositories
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get -y install --no-install-recommends \
-  git \
-  ssh \
-  wget \
-  cmake \
-  curl \
   gosu \
-  gnupg \
-  vim \
-  unzip \
-  lsb-release \
-  && apt-get autoremove -y && apt-get clean -y && rm -rf /var/lib/apt/lists/* "$HOME"/.cache
-
-# Add GitHub to known hosts for private repositories
-RUN mkdir -p ~/.ssh \
+  ssh \
+  && apt-get autoremove -y && apt-get clean -y && rm -rf /var/lib/apt/lists/* "$HOME"/.cache \
+  && mkdir -p ~/.ssh \
   && ssh-keyscan github.com >> ~/.ssh/known_hosts
 
 # Copy files