DockerでMeCabのインストールの有無を切り替えられるようにする

Dockerfile

@@ -1,13 +1,10 @@
 FROM node:lts-bullseye
+
 RUN apt-get update && apt-get install -y tini
 
-COPY . /ai
+ARG enable_mecab=1
 
-WORKDIR /ai
+RUN if [ $enable_mecab -ne 0 ]; then apt-get update \
-RUN npm install && npm run build
-
-# install mecab and neologd
-RUN apt-get update \
   && apt-get install mecab libmecab-dev mecab-ipadic-utf8 make curl xz-utils file sudo --no-install-recommends -y \
   && apt-get clean \
   && rm -rf /var/lib/apt-get/lists/* \
@@ -17,7 +14,12 @@ RUN apt-get update \
   && ./bin/install-mecab-ipadic-neologd -n -y \
   && rm -rf /opt/mecab-ipadic-neologd \
   && echo "dicdir = /usr/lib/x86_64-linux-gnu/mecab/dic/mecab-ipadic-neologd/" > /etc/mecabrc \
-  && apt-get purge git make curl xz-utils file -y
+  && apt-get purge git make curl xz-utils file -y; fi
+
+COPY . /ai
+
+WORKDIR /ai
+RUN npm install && npm run build
 
 ENTRYPOINT ["/usr/bin/tini", "--"]
 CMD npm start

docker-compose.yml

@@ -1,7 +1,10 @@
 version: '3'
 services:
   app:
-    build: .
+    build:
+      context: .
+      args:
+        - enable_mecab=1
     volumes:
       - './config.json:/ai/config.json:ro'
       - './font.ttf:/ai/font.ttf:ro'