{"id":3389,"date":"2026-09-08T10:46:49","date_gmt":"2026-09-08T01:46:49","guid":{"rendered":"https:\/\/qol-kk.com\/wp2\/?p=3389"},"modified":"2026-09-08T10:46:49","modified_gmt":"2026-09-08T01:46:49","slug":"20260907-plan022","status":"publish","type":"post","link":"https:\/\/qol-kk.com\/wp2\/blog\/2026\/09\/08\/20260907-plan022\/","title":{"rendered":"Dockerfile \u306e\u66f8\u304d\u65b9 \u2014 \u6700\u5c0f\u69cb\u6210\u304b\u3089\u59cb\u3081\u308b"},"content":{"rendered":"<h2>\u6982\u8981<\/h2>\n<p>Dockerfile \u306f\u300c\u30a2\u30d7\u30ea\u3092\u52d5\u304b\u3059\u74b0\u5883\u3092\u30b3\u30fc\u30c9\u3067\u5b9a\u7fa9\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u300d\u3067\u3059\u3002\u305f\u3060\u3001\u6700\u521d\u304b\u3089\u516c\u5f0f\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u5168\u90e8\u8aad\u3082\u3046\u3068\u3059\u308b\u3068\u60c5\u5831\u91cf\u304c\u591a\u304f\u3001\u6700\u521d\u306e\u4e00\u6b69\u3067\u3064\u307e\u305a\u304d\u304c\u3061\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f <strong>\u52d5\u304f\u6700\u5c0f\u69cb\u6210\u306e Dockerfile<\/strong> \u304b\u3089\u59cb\u3081\u3001\u305d\u3053\u306b 1 \u3064\u305a\u3064\u6539\u5584\u3092\u7a4d\u307f\u4e0a\u3052\u3066\u3044\u304d\u307e\u3059\u3002\u5404\u30b9\u30c6\u30c3\u30d7\u3067\u300c\u306a\u305c\u305d\u3046\u66f8\u304f\u306e\u304b\u300d\u3092\u660e\u793a\u3059\u308b\u306e\u3067\u3001\u30b3\u30d4\u30da\u3067\u306f\u306a\u304f\u7406\u89e3\u3057\u3066\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308b\u3053\u3068\u3092\u76ee\u6307\u3057\u307e\u3059\u3002<\/p>\n<h2>\u74b0\u5883<\/h2>\n<ul>\n<li>Docker Engine 24 \u4ee5\u964d<\/li>\n<li>\u984c\u6750: Node.js \u306e\u6975\u5c0f Web \u30a2\u30d7\u30ea\uff08\u8003\u3048\u65b9\u306f Python \/ Go \u3067\u3082\u5171\u901a\uff09<\/li>\n<\/ul>\n<pre class=\"lang:default decode:true\">docker --version\n# Docker version 24.x.x, build ...<\/pre>\n<h2>\u30b9\u30c6\u30c3\u30d70: \u984c\u6750\u306e\u30a2\u30d7\u30ea<\/h2>\n<p>\u307e\u305a\u30b3\u30f3\u30c6\u30ca\u5316\u3059\u308b\u5bfe\u8c61\u3092\u7528\u610f\u3057\u307e\u3059\u3002\u6a19\u6e96\u30e2\u30b8\u30e5\u30fc\u30eb\u3060\u3051\u3067\u52d5\u304f HTTP \u30b5\u30fc\u30d0\u30fc\u3067\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true\">\/\/ app.js\nconst http = require(\"http\");\nconst port = process.env.PORT || 3000;\n\nhttp\n  .createServer((req, res) =&gt; {\n    res.writeHead(200, { \"Content-Type\": \"text\/plain\" });\n    res.end(\"hello from container\\n\");\n  })\n  .listen(port, () =&gt; console.log(`listening on ${port}`));<\/pre>\n<pre class=\"lang:default decode:true\">\/\/ package.json\n{\n  \"name\": \"minimal-app\",\n  \"version\": \"1.0.0\",\n  \"private\": true,\n  \"scripts\": { \"start\": \"node app.js\" }\n}<\/pre>\n<h2>\u30b9\u30c6\u30c3\u30d71: \u3068\u306b\u304b\u304f\u52d5\u304f\u6700\u5c0f\u306e Dockerfile<\/h2>\n<pre class=\"lang:default decode:true\">FROM node:20\nWORKDIR \/app\nCOPY . .\nCMD [\"node\", \"app.js\"]<\/pre>\n<table>\n<thead>\n<tr>\n<th>\u547d\u4ee4<\/th>\n<th>\u5f79\u5272<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><code>FROM<\/code><\/td>\n<td>\u571f\u53f0\u3068\u306a\u308b\u30d9\u30fc\u30b9\u30a4\u30e1\u30fc\u30b8<\/td>\n<\/tr>\n<tr>\n<td><code>WORKDIR<\/code><\/td>\n<td>\u4f5c\u696d\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u6307\u5b9a\u30fb\u4f5c\u6210<\/td>\n<\/tr>\n<tr>\n<td><code>COPY<\/code><\/td>\n<td>\u30db\u30b9\u30c8 \u2192 \u30a4\u30e1\u30fc\u30b8\u3078\u306e\u30b3\u30d4\u30fc<\/td>\n<\/tr>\n<tr>\n<td><code>CMD<\/code><\/td>\n<td>\u8d77\u52d5\u6642\u306b\u5b9f\u884c\u3059\u308b\u30b3\u30de\u30f3\u30c9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<pre class=\"lang:default decode:true\">docker build -t minimal-app .\ndocker run --rm -p 3000:3000 minimal-app\ncurl http:\/\/localhost:3000\n# hello from container<\/pre>\n<h2>\u30b9\u30c6\u30c3\u30d72: CMD \u306f exec \u5f62\u5f0f\u3067\u66f8\u304f<\/h2>\n<pre class=\"lang:default decode:true\">CMD node app.js          # shell \u5f62\u5f0f\uff08\/bin\/sh -c \u7d4c\u7531\uff09\nCMD [\"node\", \"app.js\"]   # exec \u5f62\u5f0f\uff08\u63a8\u5968\uff09<\/pre>\n<p>shell \u5f62\u5f0f\u306f\u30b7\u30a7\u30eb\u3092 1 \u679a\u631f\u3080\u305f\u3081\u3001<code>docker stop<\/code> \u306e\u505c\u6b62\u30b7\u30b0\u30ca\u30eb\uff08SIGTERM\uff09\u304c\u30a2\u30d7\u30ea\u672c\u4f53\u306b\u5c4a\u304d\u306b\u304f\u304f\u3001\u7d42\u4e86\u51e6\u7406\u304c\u6b63\u3057\u304f\u8d70\u3089\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<strong>exec \u5f62\u5f0f\u3092\u57fa\u672c<\/strong>\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>\u30b9\u30c6\u30c3\u30d73: \u30ec\u30a4\u30e4\u30fc\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u52b9\u304b\u305b\u308b\uff08COPY \u306e\u9806\u5e8f\uff09<\/h2>\n<p><code>COPY . .<\/code> \u3060\u3051\u3060\u3068\u3001\u30b3\u30fc\u30c9\u3092 1 \u884c\u5909\u3048\u308b\u305f\u3073\u306b\u4f9d\u5b58\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3082\u3084\u308a\u76f4\u3057\u306b\u306a\u308a\u307e\u3059\u3002Docker \u306f\u547d\u4ee4\u3054\u3068\u306b\u30ec\u30a4\u30e4\u30fc\u3092\u4f5c\u308a\u3001\u5909\u5316\u304c\u306a\u3051\u308c\u3070\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u518d\u5229\u7528\u3059\u308b\u305f\u3081\u3001<strong>\u5909\u5316\u3057\u306b\u304f\u3044\u3082\u306e\u3092\u5148\u306b\u30b3\u30d4\u30fc<\/strong>\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true\">FROM node:20\nWORKDIR \/app\n\nCOPY package*.json .\/\nRUN npm install --omit=dev\n\nCOPY . .\n\nCMD [\"node\", \"app.js\"]<\/pre>\n<p><code>app.js<\/code> \u3060\u3051\u306e\u7de8\u96c6\u306a\u3089 <code>npm install<\/code> \u30ec\u30a4\u30e4\u30fc\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u518d\u5229\u7528\u3055\u308c\u3001\u518d\u30d3\u30eb\u30c9\u304c\u5927\u5e45\u306b\u901f\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u30b9\u30c6\u30c3\u30d74: .dockerignore \u3067\u4e0d\u8981\u7269\u3092\u6301\u3061\u8fbc\u307e\u306a\u3044<\/h2>\n<pre class=\"lang:default decode:true\">node_modules\nnpm-debug.log\n.git\n.gitignore\n.env\nDockerfile\n.dockerignore<\/pre>\n<p><code>.dockerignore<\/code> \u306f <strong>\u30d3\u30eb\u30c9\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306b\u9001\u308b\u30d5\u30a1\u30a4\u30eb\u3092\u7d5e\u308b<\/strong> \u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3001\u901f\u5ea6\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u4e21\u65b9\u306b\u52b9\u304d\u307e\u3059\u3002\u7279\u306b <code>.env<\/code> \u306e\u3088\u3046\u306a\u79d8\u533f\u30d5\u30a1\u30a4\u30eb\u306f\u5fc5\u305a\u9664\u5916\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2>\u30b9\u30c6\u30c3\u30d75: \u30a4\u30e1\u30fc\u30b8\u3092\u8efd\u304f\u3059\u308b<\/h2>\n<pre class=\"lang:default decode:true\">FROM node:20-slim<\/pre>\n<p><code>alpine<\/code> \u306f\u3055\u3089\u306b\u5c0f\u3055\u3044\u3067\u3059\u304c\u3001<code>musl<\/code> \u4f9d\u5b58\u3067\u30cd\u30a4\u30c6\u30a3\u30d6\u30e2\u30b8\u30e5\u30fc\u30eb\u3068\u306e\u76f8\u6027\u554f\u984c\u304c\u51fa\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<strong>\u307e\u305a slim\u3001\u5fc5\u8981\u306a\u3089 alpine \u3092\u691c\u8a3c\u3057\u3066\u304b\u3089<\/strong>\u3068\u3044\u3046\u9806\u5e8f\u304c\u5b89\u5168\u3067\u3059\u3002<\/p>\n<h2>\u30b9\u30c6\u30c3\u30d76: \u30de\u30eb\u30c1\u30b9\u30c6\u30fc\u30b8\u30d3\u30eb\u30c9\u3067\u6210\u679c\u7269\u3060\u3051\u3092\u6b8b\u3059<\/h2>\n<p>\u30d3\u30eb\u30c9\u6642\u306b\u5fc5\u8981\u3067\u3082\u5b9f\u884c\u6642\u306b\u4e0d\u8981\u306a\u3082\u306e\u306f\u3001\u6700\u7d42\u30a4\u30e1\u30fc\u30b8\u304b\u3089\u5916\u305b\u307e\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true\">FROM node:20 AS build\nWORKDIR \/app\nCOPY package*.json .\/\nRUN npm install\nCOPY . .\nRUN npm run build   # dist\/ \u3092\u751f\u6210\u3059\u308b\u3068\u4eee\u5b9a\uff08\u4eee\u7f6e\u304d: \u69cb\u6210\u4f9d\u5b58\uff09\n\nFROM node:20-slim AS runtime\nWORKDIR \/app\nENV NODE_ENV=production\nCOPY package*.json .\/\nRUN npm install --omit=dev\nCOPY --from=build \/app\/dist .\/dist\nCMD [\"node\", \"dist\/app.js\"]<\/pre>\n<p><code>COPY --from=build<\/code> \u3067\u524d\u30b9\u30c6\u30fc\u30b8\u306e\u6210\u679c\u7269\u3060\u3051\u3092\u5f15\u304d\u8fbc\u3080\u306e\u304c\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n<h2>\u30b9\u30c6\u30c3\u30d77: root \u3092\u907f\u3051\u308b<\/h2>\n<pre class=\"lang:default decode:true\">FROM node:20-slim\nWORKDIR \/app\nCOPY package*.json .\/\nRUN npm install --omit=dev\nCOPY . .\nUSER node\nCMD [\"node\", \"app.js\"]<\/pre>\n<p><code>node<\/code> \u30a4\u30e1\u30fc\u30b8\u306b\u306f\u6700\u521d\u304b\u3089 <code>node<\/code> \u30e6\u30fc\u30b6\u30fc\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u975e root \u3067\u52d5\u304b\u3059\u3053\u3068\u3067\u653b\u6483\u9762\u3092\u6e1b\u3089\u305b\u307e\u3059\u3002<\/p>\n<h2>\u5b8c\u6210\u5f62<\/h2>\n<pre class=\"lang:default decode:true\">FROM node:20-slim\nWORKDIR \/app\nENV NODE_ENV=production\nCOPY package*.json .\/\nRUN npm install --omit=dev\nCOPY . .\nUSER node\nEXPOSE 3000\nCMD [\"node\", \"app.js\"]<\/pre>\n<p><code>EXPOSE<\/code> \u306f\u300c\u3053\u306e\u30b3\u30f3\u30c6\u30ca\u306f 3000 \u756a\u3092\u4f7f\u3046\u300d\u3068\u3044\u3046\u5ba3\u8a00\uff08\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u7684\u306a\u610f\u5473\uff09\u3067\u3001\u5b9f\u969b\u306e\u516c\u958b\u306f <code>-p<\/code> \u3067\u884c\u3044\u307e\u3059\u3002<\/p>\n<h2>\u78ba\u8a8d\u65b9\u6cd5<\/h2>\n<pre class=\"lang:default decode:true\">docker build -t minimal-app .\ndocker images minimal-app          # \u30b5\u30a4\u30ba\u78ba\u8a8d\ndocker run --rm -p 3000:3000 minimal-app\ncurl http:\/\/localhost:3000         # hello from container\ndocker run --rm minimal-app id     # uid=1000(node) \u3092\u78ba\u8a8d<\/pre>\n<h2>\u6ce8\u610f\u70b9<\/h2>\n<ul>\n<li><code>latest<\/code> \u30bf\u30b0\u306b\u4f9d\u5b58\u3057\u306a\u3044\uff08<code>node:20-slim<\/code> \u306e\u3088\u3046\u306b\u30e1\u30b8\u30e3\u30fc\u3092\u56fa\u5b9a\uff09<\/li>\n<li><code>apt-get install<\/code> \u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u524a\u9664\u307e\u3067\u540c\u4e00 <code>RUN<\/code> \u306b\uff08<code>&amp;&amp; rm -rf \/var\/lib\/apt\/lists\/*<\/code>\uff09<\/li>\n<li>\u79d8\u533f\u60c5\u5831\u3092 <code>ENV<\/code> \/ <code>COPY<\/code> \u3067\u713c\u304d\u8fbc\u307e\u306a\u3044\uff08\u30a4\u30e1\u30fc\u30b8\u5c65\u6b74\u306b\u6b8b\u308b\uff09<\/li>\n<li><code>CMD<\/code> \u3068 <code>ENTRYPOINT<\/code> \u306e\u4f7f\u3044\u5206\u3051\uff08\u56fa\u5b9a\u306e\u5b9f\u884c\u4f53\u306f <code>ENTRYPOINT<\/code>\u3001\u53ef\u5909\u5f15\u6570\u306f <code>CMD<\/code>\u3002\u6700\u521d\u306f <code>CMD<\/code> \u3060\u3051\u3067\u5341\u5206\uff09<\/li>\n<\/ul>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>Dockerfile \u306f\u6700\u521d\u304b\u3089\u5b8c\u74a7\u306b\u66f8\u304f\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u6700\u5c0f\u69cb\u6210 \u2192 \u30ad\u30e3\u30c3\u30b7\u30e5\u9806\u5e8f \u2192 <code>.dockerignore<\/code> \u2192 \u8efd\u91cf\u5316 \u2192 \u30de\u30eb\u30c1\u30b9\u30c6\u30fc\u30b8 \u2192 \u975e root\u3001\u306e\u9806\u3067\u7a4d\u307f\u4e0a\u3052\u308c\u3070\u3001\u300c\u306a\u305c\u305d\u306e1\u884c\u304c\u3042\u308b\u306e\u304b\u300d\u3092\u8aac\u660e\u3067\u304d\u308b Dockerfile \u306b\u306a\u308a\u307e\u3059\u3002\u6700\u5c0f\u69cb\u6210\u304b\u3089\u59cb\u3081\u3066\u3001\u5fc5\u8981\u306a\u5206\u3060\u3051\u8db3\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dockerfile \u306f\u300c\u30a2\u30d7\u30ea\u3092\u52d5\u304b\u3059\u74b0\u5883\u3092\u30b3\u30fc\u30c9\u3067\u5b9a\u7fa9\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u300d\u3067\u3059\u3002\u305f\u3060\u3001\u6700\u521d\u304b\u3089\u516c\u5f0f\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u5168\u90e8\u8aad\u3082\u3046\u3068\u3059\u308b\u3068\u60c5\u5831\u91cf\u304c\u591a\u304f\u3001\u6700\u521d\u306e\u4e00\u6b69\u3067\u3064\u307e\u305a\u304d\u304c\u3061\u3067\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":3388,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"sns_share_botton_hide":"","vkExUnit_sns_title":"","_vk_print_noindex":"","sitemap_hide":"","_veu_custom_css":"","veu_display_promotion_alert":"","vkexunit_cta_each_option":"","_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[75],"tags":[498,834],"class_list":["post-3389","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-code-of-serverside","tag-docker","tag-834"],"veu_head_title_object":{"title":"","add_site_title":""},"jetpack_publicize_connections":[],"jetpack-related-posts":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/qol-kk.com\/wp2\/wp-content\/uploads\/2026\/09\/20260907-plan022-thumbnail.png","_links":{"self":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts\/3389","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/comments?post=3389"}],"version-history":[{"count":1,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts\/3389\/revisions"}],"predecessor-version":[{"id":3390,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts\/3389\/revisions\/3390"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/media\/3388"}],"wp:attachment":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/media?parent=3389"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/categories?post=3389"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/tags?post=3389"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}