diff --git a/Dockerfile b/Dockerfile
index 1002038ca..a09dff4a8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM --platform=$BUILDPLATFORM node:22.9.0-alpine as build
+FROM --platform=$BUILDPLATFORM node:22.9.0-alpine AS build
 WORKDIR /app
 
 ENV CYPRESS_INSTALL_BINARY=0
@@ -19,8 +19,8 @@ RUN chmod 755 /startup.sh
 
 COPY --from=build /app/dist /usr/share/caddy
 
-ENV APP_NAME traQ
-ENV THEME_COLOR #0D67EA
+ENV APP_NAME=traQ
+ENV THEME_COLOR=#0D67EA
 
 # 設定上書き処理用に、.brを消して、元の設定を別のディレクトリに保存しておく
 RUN cd /usr/share/caddy && \