投稿時間:2023-04-09 18:17:27 RSSフィード2023-04-09 18:00 分まとめ(15件)

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python	Pythonタグが付けられた新着投稿 - Qiita	[python]指定したファイルから値を抽出し、その値を他のファイルに書き込む	https://qiita.com/takeshiGiant/items/44d5c616a5883d205728	defgrepwordintxtfilefile	2023-04-09 17:48:25
python	Pythonタグが付けられた新着投稿 - Qiita	【Python】matplotlibでurlからimreadした複数の画像をいい感じにしてpdf出力する	https://qiita.com/ys_dirard/items/0bdd8437f78f67dfccc9	imread	2023-04-09 17:29:36
python	Pythonタグが付けられた新着投稿 - Qiita	PythonとElasticSearchとMetabaseを使ったデータ探索、分析、可視化	https://qiita.com/wooooo/items/82b6fa1caf57d89e7ecb	elasticsearch	2023-04-09 17:25:47
Docker	dockerタグが付けられた新着投稿 - Qiita	M2 MacにDocker Imageが対応してなかったときの対処方法	https://qiita.com/kei_gnu/items/815e82b50db3bab6466d	docker	2023-04-09 18:00:07
Git	Gitタグが付けられた新着投稿 - Qiita	【Git】入門記事リンク集【Sourcetree/GitLab/git-flow】	https://qiita.com/k-kishimoto/items/7ca2e5f4c7e41f77bd7f	sourcetreegitlabgitflow	2023-04-09 17:47:39
海外TECH	DEV Community	Dockerize Your Nextjs App Like a Pro: Advanced Tips for Next-Level Optimization	https://dev.to/nitinfab/dockerize-your-nextjs-app-like-a-pro-advanced-tips-for-next-level-optimization-nb2	Dockerize Your Nextjs App Like a Pro Advanced Tips for Next Level OptimizationCreating a new application with your team and having it up and going on your team s system can be difficult because you need your app to run in different environments and yet behave the same way Docker thankfully is a great solution that streamlines the process It guarantees that your app will function the same regardless of where it is distributed by creating a bundle containing your software code along with its dependencies and configurations This allows you to concentrate on developing the most effective software app possible without being sidetracked by technological issues Moreover to deploy your app to platforms like Fly io you need to containerize your app using Docker And that s where this guide will help you In this guide we will walk you through the process of creating a Docker image of your Next js application and then we ll look at how to optimize it But before that let s look at the advantages of using Docker Benefits of Using Docker for App DeploymentAs a developer you are aware of how critical application deployment is The deployment process however can be difficult since there are so many things to take into account such as compatibility scalability portability and rollback capabilities This is where Docker comes into play As discussed above as well Docker makes deployment easier by integrating your application s dependencies into a single container which provides various benefits for developers Improved scalability is a fundamental benefit of using Docker for deployment You can rapidly grow your application horizontally using Docker by running several instances of your container in different servers allowing it to handle increased traffic without affecting performance A container is a standalone application created from your Docker image By offering a consistent environment independent of the host system Docker also makes portability easier This implies that you can easily deploy your application across several environments including development and production Making use of Docker also facilitates updates and rollbacks Every time you update your application all you have to do is generate a new Docker image and re run your containers with the latest Docker image You can also easily roll back to an earlier version of the app by deploying an older Docker image if the current version of the app produces difficulties Further advantages of Docker include increased security inexpensive infrastructure and simpler developer collaboration You can learn more about that by clicking here Now that we ve learned about the benefits of using Docker it s time to install the prerequisites Essential Prerequisites for Creating a Docker ImageTo ensure a smooth creation of the Docker image there are a few prerequisites that need to be met Node js and NPM must be installed on your system Docker needs to be installed as well Once these requirements are fulfilled we can proceed with creating the Next js app Creating a Blog WebsiteFor this tutorial it s not crucial to create a new blog or e commerce Next js application from scratch Instead installing a starter app from Vercel can be a more efficient approach To do this simply run the following command in your terminal on your preferred directory npx create next app example blog starter blog starter appIt will create a Next js blog app To deploy your application you must first build it based on the command specified in your package json file You can build a Next js by running the following command npm run buildBy executing this command a “ next folder will be generated containing all the files and assets defined in your Next js application The logs will also display the pages that were generated To run the Next js app execute the following command npm startAfter the server is ready go to localhost to see the output You should see a blog app similar to this It should be noted that the scripts used here are defined by default in the “package json file Writing a DockerfileBefore we begin let us first define the terms Container and Image and why we are building a Dockerfile An image or a pre built package containing the application code and its dependencies is required to execute within a container To construct an image you ll require a Dockerfile which is a set of instructions that instructs Docker how to build the image Docker in a nutshell allows developers to simply generate distribute and deploy images resulting in faster development cycles and simpler application management With that stated let s make a “Dockerfile in our root directory and paste the following content within it FROM node alpineRUN mkdir p appWORKDIR appCOPY RUN npm installRUN npm run buildEXPOSE CMD npm start Here we defined a base image i e node alpine What exactly does it do It will download the node alpine image from the Docker Hub with Node js npm and other necessary tools pre installed Afterward as per the instruction it creates a directory and sets it as a working directory then copies the application files into the working directory The “RUN npm install and “RUN npm run build lines install dependencies amp build the application Finally we expose port and start the application using the command “npm start This was our configuration stored inside the Dockerfile Now let s build an image using this docker build t blog website We tagged or named this image as “blog website and then specified the directory where the Dockerfile is located which is the root directory for us As you can see from the logs it is retrieving the base image and then executing everything specified in the Dockerfile After the process finishes it will generate a docker image which you can see using the “docker images command It s MB in size For sure in the next section we ll see how you can reduce this number drastically To run this image within a container specifying the port as use the following command docker run p blog website You can now go to localhost and see your app running but this time from the Docker container Optimizing the Docker ImagePreviously we created a simple Dockerfile and provided some basic instructions to create an image that can be run inside a container However there is room for further optimization as the current image size is MB which is not ideal for production apps There are various methods to optimize the image size and we will focus on a simple approach based on the factors listed below Pick a different smaller base image it s not always the case You can use a smaller base image to reduce the image size Combine commands You may combine the “RUN npm install and “RUN npm run build instructions into a single “RUN npm ci quiet amp amp npm run build command This reduces the number of layers in the image and its size Use multi stage builds You can divide your Dockerfile into two stages with the first stage building your app and in the second stage you can copy only the files required This will reduce redundant files and environments that we created in the first stage Here we will primarily use multi stage builds to demonstrate how we can easily reduce the size to roughly MB Let s proceed with the optimization process by replacing the contents of the existing Dockerfile with the following instructions Build StageFROM node alpine AS BUILD IMAGEWORKDIR appCOPY package json RUN npm ciCOPY RUN npm run build Production StageFROM node alpine AS PRODUCTION STAGEWORKDIR appCOPY from BUILD IMAGE app package json COPY from BUILD IMAGE app next nextCOPY from BUILD IMAGE app public publicCOPY from BUILD IMAGE app node modules node modulesENV NODE ENV productionEXPOSE CMD npm start We have divided our Dockerfile file into two sections i e “Build Stage and “Production Stage And the commands are pretty self explanatory and straightforward For the build stage the commands are similar to the Dockerfile we created earlier On the other hand in the production stage we are just copying the files that we need from the build stage and running the app Let s build a new app with the new Dockerfile and name this image “blog website docker build t blog website And as you can see from the command “docker images the second image saved around MB You can run this image by running the command “docker run p blog website as well and you will get the same blog website Taking Docker Image Optimization to the Next LevelAs we can see even after optimizing images with the help of multi stage builds we don t see significant image optimization because smaller Docker images are easier to deploy and scale This is why we will be exploring other ways to further optimize our image size For that create a “next config js file in the root directory and paste the below code type import next NextConfig const nextConfig experimental outputStandalone true module exports nextConfigAccording to the documentation it will create a folder at “ next standalone which can then be deployed on its own without installing “node modules It is also one of the most effective methods for optimizing the docker file You can learn more about it here Let s modify the Dockerfile now FROM node alpine as builderWORKDIR my spaceCOPY package json package lock json RUN npm ciCOPY RUN npm run buildFROM node alpine as runnerWORKDIR my spaceCOPY from builder my space package json COPY from builder my space package lock json COPY from builder my space next config js COPY from builder my space public publicCOPY from builder my space next standalone COPY from builder my space next static next staticEXPOSE ENTRYPOINT npm start The code in this section is mostly identical to the Dockerfile we created earlier using a multi stage build As you can see we did not use node modules here but rather the standalone folder which will optimize the image to a greater extent Let s build a new app with the new Dockerfile and name this image “blog website docker build t blog website The resulting image size has now been reduced to MB What Really Matters for Docker Image Disk UsageIn the earlier section on optimizing Docker images we explored many aspects that might influence image size such as using a smaller base image However some sources such as Semaphore claim that the size of the base image is irrelevant in some cases Instead of the size of the base image the size of frequently changing layers is the most important factor influencing disk usage Because Docker images are composed of layers that may be reused by other images the link between size and disk usage is not always clear Two images with the same layers for example might have drastically different disk consumption if one of the layers changes often As a result shrinking the base image may be ineffective in saving disc space and may restrict functionality If you wish to go more into the topic you may do so here Is Docker Right for You Here s When to Consider ItDocker as we ve seen is a great tool for managing software dependencies and providing consistent environments Knowing when to use Docker and when to create a Docker image is crucial in achieving the benefits of this platform Docker is ideal for An Isolated environment for creating and testing apps Deployment purposesScalabilityContinuous Integration and Deployment CI CD It goes without saying that if you re using Docker you ll need Docker images as well So whether you require an isolated environment want to deploy apps reliably and consistently or want to ensure consistency across different environments Docker can help While Docker helps with deployment and scaling you still need a front end ready to be deployed and turned into a full stack app For this you can use the Locofy ai plugin to generate modular and highly extensible Next js apps directly from your Figma amp Adobe XD design files You can use the auto layout feature on Figma to make your designs responsive on the Locofy ai plugin and even if your designs don t utilise auto layouts the plugin offers a Design Optimizer feature that uses AI to apply auto layouts to your design files Once your designs are responsive you can use the Auto Components feature to split your design elements into working React components making them easy to extend Hope you like it That s it ーthanks	2023-04-09 08:11:41
海外科学	NYT > Science	Abortion Pill Cases Appear Headed to the Supreme Court	https://www.nytimes.com/2023/04/08/us/politics/abortion-pill-supreme-court.html	Abortion Pill Cases Appear Headed to the Supreme CourtOne federal judge said the F D A s approval of the drug mifepristone was invalid while another federal judge ordered the agency to keep the pill available The legal fallout is just beginning	2023-04-09 08:27:00
ニュース	@日本経済新聞 電子版	米ＣＰＩに注目　円、上値を試す展開か https://t.co/6oOMSqXfq1	https://twitter.com/nikkei/statuses/1644982212922843137	注目	2023-04-09 08:34:56
ニュース	@日本経済新聞 電子版	桜花賞、リバティアイランドが優勝　重賞2勝目 https://t.co/NO86qm2IIQ	https://twitter.com/nikkei/statuses/1644979956219510784	重賞	2023-04-09 08:25:58
ニュース	@日本経済新聞 電子版	バフェットの師匠の見識　配当の多さで銘柄を選ばない https://t.co/v8C8KJZ1yr	https://twitter.com/nikkei/statuses/1644976154074562560	配当	2023-04-09 08:10:51
ニュース	@日本経済新聞 電子版	WBCロス、グッズで満たす　写真集はサッカーＷ杯超えも https://t.co/5oXIxO8RBE	https://twitter.com/nikkei/statuses/1644975173710536704	写真集	2023-04-09 08:06:58
ニュース	@日本経済新聞 電子版	植田日銀、９万字から占う政策の針路　寄稿35本を読む https://t.co/rlSdc08fcf	https://twitter.com/nikkei/statuses/1644973900185600000	針路	2023-04-09 08:01:54
海外ニュース	Japan Times latest articles	Takefusa Kubo sets La Liga scoring record for Japanese player	https://www.japantimes.co.jp/sports/2023/04/09/soccer/kubo-laliga-japanese-scoring-record/	Takefusa Kubo sets La Liga scoring record for Japanese playerReal Sociedad won its second straight home game and sits fourth in the league on course for qualification for next season s Champions League	2023-04-09 17:12:39
ニュース	BBC News - Home	Junior doctor strike: Union's pay demands unrealistic, says Steve Barclay	https://www.bbc.co.uk/news/health-65223673?at_medium=RSS&at_campaign=KARANGA	easter	2023-04-09 08:18:40
ニュース	BBC News - Home	Easter sermons: Do not lose heart over conflicts, Archbishop of Canterbury says	https://www.bbc.co.uk/news/uk-65224603?at_medium=RSS&at_campaign=KARANGA	divine	2023-04-09 08:45:14