Alpine sh. The image is only 5MB and has access to a package repository that is much more featureful than other BusyBox based images. Nov 29, 2025 · Docker Alpine has become a staple in the containerization world, renowned for its ultra-small size (~5MB), security-focused design, and efficiency. It is described as, “The Swiss Army Knife of Embedded Linux. Whenever I open a . sh: . FriendlyElec, based on the features of Alpine Linux, offers an Alpine Linux system image built with GitHub Actions. What is Docker? Docker is a containerized tool used to containerize the application along with its dependencies. default php-fpm. A quick and practical guide to using bash with Alpine-based Docker images. sh file, it opens it in gedit instead of the terminal. However, one common hurdle users face is starting an interactive shell Nov 22, 2025 · In this blog, we’ll demystify why Alpine lacks Bash, walk through step-by-step how to install and use Bash in Alpine-based images, and share best practices to avoid common pitfalls. Verify permissions with: The Alpine Linux wiki has a page comparing apk to other popular distros, with many helpful examples. Built on Alpine Linux—a lightweight, musl libc-based distribution—it’s ideal for microservices, CI/CD pipelines, and applications where minimal resource usage is critical. It's my understanding that when you use ENTRYPOINT ["sh", "this command will be sent to sh"] so why can I enter the container and simply type "bash" to get a bash terminal, but not declare it in the Dockerfile? UPDATE: I was able to fix this by changing my Dockerfile to: FROM alpine:latest RUN apk update && apk upgrade && apk add --update bash Alpine’s package manager, apk, provides fast and simple package installation and updates, supporting a wide range of software packages. 6 Alpine defaults to ash as the login shell, I want to change it to bash. Outdoor Retailer since 1973 specializing in backpacking, camping, kayaking, canoeing, cycling, climbing, skiing, and snowboarding. Launch the Alpine Linux Installation by running the setup-alpine script : # setup-alpine The question-and-answer dialog of setup-alpine takes care of the base configuration. sh file and placed it in /etc/profile. 如何在我的 Alpine Linux LXD（Linux容器）虚拟机(VM)中安装 bash shell？ Alpine Linux 自带 BusyBox 工具。它被评为“嵌入式 Linux 的瑞士军刀”。BusyBox 将许多通用 UNIX 实用程序的小版本合并到一个 /bin/sh 路径下的小型 Used and in excellent condition, this D'Angelico Premier Bedford SH in stunning Alpine White offers sleek hollow body tone with modern edge. Alpine Linux uses /bin/sh as its default shell. 072 kB Step 1/3 : FROM alpine ---> 665ffb03bfae Step 2/3 : COPY sayhello. How do I open this file in the Run bash in Alpine Linux docker container. /bin/sh: This is the command we want to execute inside the container. I created a docker image from openjdk:8-jdk-alpine and I want to use bash, rather than sh as my shell, however when I try to execute simple commands I get the following errors: RUN bash /bin/sh: ba RUN /bin/sh -c set -eux; cd "$ {PHP_INI_DIR%/php}"; cp -v php-fpm. Q: How do I fix the “/bin/sh not found” error? A: To fix the “/bin/sh not found” error, you will need to install the “sh” shell, or make sure that the “sh” shell is in the “/bin” directory and is executable. sh # Convert line endings CMD ["/bin/script. Ash shell Alpine Linux uses Busybox Ash shell for its default shell. New installations of postmarketOS let apk ask for confirmation by default. Release Branches There are several release branches for Alpine Linux available at the same time. Jul 23, 2025 · Here in this guide, I will first discuss what Docker is. sh: not found The default shell used by Alpine Linux is the BusyBox variant of the ash shell. Each May and November we make a release branch from edge. container's shell provides an easy and effective way to manage and monitor container, making it a valuable tool for developers working with How can I get /etc/profile to run automatically when starting an Alpine Docker container interactively? I have added some aliases to an aliases. sh The Dockerfile reads FROM alpine COPY sayhello. conf; grep -E '^;listen = 127. sh sayhello. The “sh” shell is not executable. ashrc file, reviewing it carefully for syntax/cli variants against that of Ash shell. A security-oriented, lightweight Linux distribution - Alpine Linux Almquist shell (also known as A Shell, ash and sh) is a lightweight Unix shell originally written by Kenneth Almquist in the late 1980s. Then I will discuss what Alpine is. In any case I hope you found what you were looking for in this post or learnt something new. In this tutorial, we’ll examine how we can start a shell in a new or running Alpine Docker container. Since the file is a DOS text file, the #! -line instructs the shell to run the script with /bin/sh\r, where \r is a common representation of a carriage return character, which is part of the line termination in DOS text files. sh ---> Using cache ---> fe41f2497715 Step 3/3 : CMD sayhello. 1:9000)/;\1/' php-fpm. Each container has a separate filesystem and runs in a different namespace; by default a container has no way of interacting with other containers, even those from the same image. conf; { echo ' [global]'; echo Sending build context to Docker daemon 3. com In the world of modern web development, Docker is a popular tool for deploying applications. SHELL := /bin/bash build: GOOS=linux go build -o bin/server main. STEP 1: FROM alpine STEP 2: COPY sh-script. Not obscure, not specific to alpine. sh CMD ["sayhello. By default, bash is not included with BusyBox and Alpine Linux. Alpine Linux comes with BusyBox. Home :: OER :: Alpine Linux :: The Shell The Shell This document provides information about the command interpreter – or shell – that we use when logging into an Alpine Linux system via the command line interface. 简体中文 (Simplified Chinese)繁體中文 (Traditional Chinese)日本語 (Japanese)한국어 (Korean)ไทย (Thai)Български (Bulgarian)Čeština (Czech)Dansk (Danish)Deutsch (German)Español - España (Spanish - Spain)Español - Latinoamérica (Spanish - Latin America)Ελληνικά (Greek)Français (French)Italiano (Italian)Bahasa Indonesia (Indonesian)Magyar (Hungarian I have a directory containing only two files, Dockerfile and sayhello. Step 3: Interacting with the Alpine Container After executing the docker run command, you will be inside the Alpine container’s shell. For non-login, interactive shells refer to Setting alias section. Initially a clone of the System V. Dockerfile . Base image was python:3-alpine, even the one with the latest tag (2022-07) has both /bin/ash and /bin/sh. The official Docker image for Alpine Linux. FROM alpine:latest RUN apk add --no-cache dos2unix # Install dos2unix COPY script. It also explains how to install and configure the Z Shell (zsh). d/www. While this tutorial is pretty specific to running SSH in an Alpine Docker container, you may reuse this knowledge to run SSH in other Linux Docker distros. I love to have some shell aliases available, when On the other hand for login shells (/bin/sh --login) setting PATH in the Dockerfile doesn't work because login scripts usually set the PATH variable which overrides whatever was set before. The problem is when I try to execute a script. For Docker Containers we use Alpine Linux, like Node:Alpine, to make our images as small as possible. Either can be installed using the setup-sshd script, or by following the instructions below. conf; cp -v php-fpm. sh will fail. go I have ascertained that both bash, make, go is there by interactively 当最常见的ls小程序加载时，操作系统会将 控制权 交给 l 而不是 交给程序正常的进入地址。 l. 0. This is since the alpine image Dockerfiles now contain a CMD command, that specifies the shell to execute when the container starts: CMD ["/bin/sh"]. It sets up a network connection to access Internet to configure the system to boot into one of three different Alpine Linux "disk" modes: "diskless" (none), "data" or "sys". 2 man page给我们更高一层的全局 iSH is a project to get a Linux shell environment running locally on your iOS device, using a usermode x86 emulator. /斌/灰 docker run -it --rm alpine /bin/ash / bin / sh的 docker run -it --rm alpine /bin/sh 灰 docker run -it --rm alpine ash SH docker run -it --rm alpine sh 我希望这些信息可以帮助你。 Firebase – 我的帐户在新控制台中的秘密在哪里？ 如何将JSONArray转换为使用camel-jackson的对象列表 Explains how to install OpenSSH server on Alpine Linux server, including setting up Docker container-based upon Alpine image. I can't find any option similar to Right Click → Open With → Other Application → Terminal. Learn how to install and enable bash command autocomplete (auto completion) on Alpine Linux to increase productivity. conf; sed -ri 's/^ (listen = 127. sh, returning me the following message: /bin/sh: bin/script. Contribute to vandot/alpine-bash development by creating an account on GitHub. sh && chmod +x /bin/script. sh 的第一行，所以你的文件 sayhello. That wait-for-it script isn't sh compliant, so you'd need to install bash into your alpine image. /sh-script. conf; grep -E '^listen = 127. The image is only 5 MB in size and has access to a package repository that is much more complete than other BusyBox based images. What I did so far: installed bash by sudo apk add bash installed shadow by sudo apk add shadow I changed my user's login shell to /bin/bash with chsh checked that /etc/passwd contains /bin/bash as default login shell for my user but that seems to be ignored. After this, I will walk you through the different steps to install and use bash on an Alpine-based Docker image. Series Part II — Optimizing My Alpine Docker Image for Use With Drupal from medium. Featuring a chambered mahogany body, maple top, bolt-on maple neck, and rosewood fingerboard, it delivers articulate resonance with dynamic playability. It is a standard POSIX shell derived from Debian Ash variant. sh contains instructions to do so). But somethimes you want to login on that Container. --> d82ae1d0b10 STEP 3: RUN . ├── Dockerfile └── sayhello. conf. This page explains how to use the default shell and various ways to change the default shell in Alpine Linux. Alpine Linux is a security-oriented, lightweight Linux distribution based on musl libc and busybox. . ” BusyBox combines tiny versions of many common UNIX utilities into a single small executable including /bin/sh. There should be a reason why the two are there in the alpine image that is made to be the most compact of all. Small. Install, authenticate, and start using Claude Code on your development machine. It would be convenient to have your aliases I'm trying to run this Makefile in an alpine docker. 4 variant of the Bourne shell, it replaced the original Bourne shell in the BSD versions of Unix released in the early 1990s. Contribute to bin456789/reinstall development by creating an account on GitHub. Note: This article describes two popular SSH implementations: OpenSSH and Dropbear. sh" I'm trying to build a docker image that has the openjdk:8-alpine as base. One of the most popular images on Docker is Alpine Bash, a lightweight alpine: This is the name of the Docker image we want to use for the container. sh Hello, Shell STEP 4: COMMIT --> 8fa27f213ed How to run Alpine Linux in Docker container? When you run docker container run alpine, you provided a command ( ls -l ), so Docker executed this command inside the container for which you saw the directory listing. In the end, the command executed is ENTRYPOINT + CMD, so these are the same: ENTRYPOINT= ['sh'] CMD= [''] ENTRYPOINT= [''] CMD= ['sh'] So it's up to you to choose which one is more Overview This article provides a short overview of SSH on Alpine Linux. To install the “sh” shell, you can run the following command: apk add sh 文章浏览阅读1k次，点赞24次，收藏6次。Alpine镜像默认只有sh：为了极致轻量，只保留最基本的工具；核心是BusyBox和musl libc：用最小的体积提供基本功能；适合微服务和资源受限场景：但可能不适合依赖完整bash或glibc的应用；_alpine镜像 If you have installed Alpine Linux image using Docker and you get, /bin/sh: bash: not found, the reason is that you do not get bash shell installed on with this image, you only get sh shell. However, may I suggest avoiding "hacks" like this and utilising HEALTHCHECK instead? RUN /bin/sh -c set -eux; addgroup -g 70 -S postgres; adduser -u 70 -S -D -G postgres -H -h /var/lib/postgresql -s /bin/sh postgres; install --verbose --directory --owner postgres --group postgres --mode 1777 /var/lib/postgresql # buildkit 970 B By using Alpine Docker container's shell, developers can easily manage and interact with container's operating system, allowing them to install packages, configure services, and run basic shell commands. A collection of tips to let you know how to check disk space usage of Docker Images, Containers and Volumes on your Linux server host. 所以你可以 将/bin/bash 定义为你 sayhello. Alpine Linux附带BusyBox。 它被描述为“嵌入式Linux的瑞士 When running an alpine docker container for the first time and attempting to install openssh, I get the following error: ole@T:~$ docker run -it --rm alpine /bin/ash / # apk add openssh WARNING: Ig 一键DD/重装脚本 (One-click reinstall OS on VPS). Try running sh yourscript. Sep 12, 2025 · This page explains how to install bash shell in Alpine Linux using the apk command including setting up command-line tab-completion for bash. /script. Does anyone know the reason for Alpine Linux choosing sh over bash? Is it more secure, smaller in size or both? Or is it inherited from busybox? I assume bash is the more widely known interface. sh 将以 bin/sh 开头 #!/bin/sh 在您的 Alpine 映像中安装 Bash，正如您所期望的，Bash 存在，在您的 Dockerfile 中包含这样一行: RUN apk add --no-cache --upgrade bash I have a directory containing only two files $ podman build -f sh. sh . Usually, an Alpine Linux image doesn’t contain bash , Instead you can use /bin/ash , /bin/sh , ash or only sh 。 /bin/灰 I have written a Dockerfile which uses as an image an private adapted Alpine image, which contains a nginx server. sh ---> Using cache ---> dfcc26c78541 Successfully built dfcc26c78541 Even though each docker container run command used the same alpine image, each execution was a separate, isolated container. 1:9000' php-fpm. bashrc file (or, alternatively, a different shell alias file) could be considered as a basis, say, for an ~/. Docker is a container platform that allows developers to quickly and easily create, deploy, and run applications in a virtual environment. sh or sh -c 'echo "running" and neither will print "hello world" (unless yourscript. In older Alpine image versions (pre-2017), the CMD command was not used, since Docker used to create an additional layer for CMD which caused the image size to increase. sh"] Fix 5: Ensure Executable Permissions If the script isn’t marked executable, running . Simple. 2 会寻找然后加载所有需要的库文件，然后再将控制权交给应用的起始入口。 上面的ls在启动时，就需要l加载器将所有的动态库加载后然后再将控制权移交给ls程序的入口。 l. Secure. d, but when I s 因为 Alpine 太精简了，它用的是 musl libc 而不是标准的 gnu libc，然后就会导致这些问题。 解决办法 因为项目很小很小，所以咱是直接用 Alpine 镜像，采用 command 在容器中执行 sh 来运行项目的。 思路是把要用到的 libc 库补全。 命令如下： But there is another way to do it: docker run -it --rm --entrypoint '' alpine/git sh This way you eliminate the entrypoint (/usr/bin/git) and run sh directly. Note: Alpine uses sh, not Bash. Alpine 自带 ash 作为默认 shell 而不是 bash. Master the art of alpine bash with this concise guide that unlocks essential commands and tips for effective scripting in Alpine Linux. How to run Linux shell in Docker container? Alpine Linux is a Linux distribution built around musl libc and BusyBox . Also see Secure Shell (Wikipedia). Or you may have better luck configuring other sidecar services inside an Alpine Docker container. sh /bin/ RUN dos2unix /bin/script. One's ~/. After the ls command finished, the container shut down. grlo8, vxwhk9, onet, 2utt5q, g90x4, oknpu, jddno, zfen, jceoo, xvfo,