diff --git a/containers/base/Dockerfile b/containers/base/Dockerfile
index dc27f8a..1d3a995 100644
--- a/containers/base/Dockerfile
+++ b/containers/base/Dockerfile
@@ -65,6 +65,15 @@ RUN set -eux; \
     unzip -q /tmp/awscliv2.zip -d /tmp; \
     /tmp/aws/install; \
     rm -rf /tmp/awscliv2.zip /tmp/aws; \
+    # AWS Session Manager plugin
+    case "$(dpkg --print-architecture)" in \
+    amd64) ssm_arch="ubuntu_64bit" ;; \
+    arm64) ssm_arch="ubuntu_arm64" ;; \
+    *) echo "Unsupported architecture for session-manager-plugin: $(dpkg --print-architecture)" && exit 1 ;; \
+    esac; \
+    curl -fsSL "https://s3.amazonaws.com/session-manager-downloads/plugin/latest/${ssm_arch}/session-manager-plugin.deb" -o /tmp/session-manager-plugin.deb; \
+    dpkg -i /tmp/session-manager-plugin.deb; \
+    rm -f /tmp/session-manager-plugin.deb; \
     # gcloud SDK
     arch="$(uname -m)"; \
     case "${arch}" in \
@@ -100,7 +109,7 @@ RUN set -eux; \
 ENV PATH="/root/.local/bin:/opt/google-cloud-sdk/bin:${PATH}"
 
 # 確認
-RUN gh --version && node --version && npm --version && aws --version && gcloud --version
+RUN gh --version && node --version && npm --version && aws --version && gcloud --version && session-manager-plugin --version
 
 # ユーザー設定
 ARG USERNAME="ubuntu"
diff --git a/containers/trygroup/Dockerfile b/containers/trygroup/Dockerfile
new file mode 100644
index 0000000..f061442
--- /dev/null
+++ b/containers/trygroup/Dockerfile
@@ -0,0 +1,28 @@
+# ==================================
+# devbase-trygroup: project-trygroup-prd / project-trygroup-prd-customer 専用環境
+# devbase-base を継承し、Poetry と pnpm を追加
+# ==================================
+
+FROM devbase-base:latest
+
+# --- root レイヤー: pnpm（npm グローバル） ---
+USER root
+RUN set -eux; \
+    npm i -g pnpm; \
+    npm cache clean --force; \
+    rm -rf /root/.npm
+
+# --- user レイヤー: Poetry ---
+# uv との競合回避:
+#   - Poetry は公式インストーラで独立した専用 venv に導入する（uv の管理環境に非干渉）
+#   - バイナリは ~/.local/bin/poetry、uv は ~/.local/bin/uv で名前衝突なし
+#   - Poetry の仮想環境は既定の ~/.cache/pypoetry に作成し、
+#     uv が使うプロジェクト直下の .venv と分離する（virtualenvs.in-project は false のまま）
+USER ubuntu
+RUN set -eux; \
+    curl -sSL https://install.python-poetry.org | python3 -; \
+    ~/.local/bin/poetry --version; \
+    rm -rf ~/.cache/pypoetry/cache ~/.cache/pip
+
+USER ubuntu
+WORKDIR /work