When encountering Docker problems, you should first locate the problem, which is problems such as image construction, container operation or network configuration, and then follow the steps to check. 1. Check the container log (dockerlogs or docker-composelogs) to obtain error information; 2. Check the container status (dockerps) and resource usage (dockerstats) to determine whether there is an exception due to insufficient memory or port problems; 3. Enter the inside of the container (dockerexec) to verify the path, permissions and dependencies; 4. Review whether there are configuration errors in the Dockerfile and compose files, such as environment variable spelling or volume mount path problems, and recommend that cleanbuild avoid cache dryness

The main difference between Docker and traditional virtualization lies in the processing and resource usage of the operating system layer. 1. Docker containers share the host OS kernel, which is lighter, faster startup, and more resource efficiency; 2. Each instance of a traditional VM runs a full OS, occupying more space and resources; 3. The container usually starts in a few seconds, and the VM may take several minutes; 4. The container depends on namespace and cgroups to achieve isolation, while the VM obtains stronger isolation through hypervisor simulation hardware; 5. Docker has better portability, ensuring that applications run consistently in different environments, suitable for microservices and cloud environment deployment.

VSCode workspace is a .code-workspace file that saves project-specific configurations. 1. It supports multi-root directory, debug configuration, shortcut key settings and extension recommendations, and is suitable for managing different needs of multiple projects. 2. The main scenarios include multi-project collaboration, customized development environment and team sharing configuration. 3. The creation method is to save the configuration through the menu File>SaveWorkspaceAs.... 4. Notes include distinguishing between .code-workspace and .vscode/settings.json, using relative paths, and avoiding storing sensitive information.

To expose Docker container ports, the host needs to access the container service through port mapping. 1. Use the dockerrun-p[host_port]:[container_port] command to run the container, such as dockerrun-p8080:3000my-web-app; 2. Use the EXPOSE instruction to mark the purpose in the Dockerfile, such as EXPOSE3000, but the port will not be automatically published; 3. Configure the ports segment of the yml file in DockerCompose, such as ports:-"8080:3000"; 4. Use dockerps to check whether the port map is generated after running.

YoucanuseenvironmentvariablesinVSCodetasksviathe${env:VARIABLE_NAME}syntax.1.Referencevariablesdirectlyintasks.jsontoavoidhardcodingsensitivedataormachine-specificvalues.2.Providedefaultvalueswith"${env:VARIABLE_NAME:-default_value}"topreve

TheVSCodeterminalnotworkingisoftenduetoafrozenterminal,misconfiguredshellsettings,conflictingextensionsorstartupscripts,oracorruptedcache/installation.1.FirstcheckiftheterminalisfrozenbytypingacommandlikelsordirandpressingEnter;ifunresponsive,closean

Using VSCode to develop Angular projects is efficient and convenient, and the key is to configure the environment correctly. First install Node.js and npm; secondly, install AngularCLI globally through npm to create projects and generate components; then install AngularLanguageService, Prettier, ESLint and debug plug-ins in VSCode to improve the development experience; then use ngnew command to create a project and open it in VSCode; use IntelliSense to achieve automatic code completion, quickly navigate files through Ctrl P, and use F12 jump definition; run ngserve to start the development server and enable automatic reloading; configure

Using lightweight basic images, merging and optimizing RUN instructions, and copying only necessary files are the key to reducing Docker images size. 1. Select lightweight basic images such as alpine, distroless or scratch to reduce unnecessary system components; 2. Merge multiple RUN commands and clean caches in time, such as combining apt-getupdate with installation commands, and delete /var/lib/apt/lists/*; 3. Exclude non-essential files through .dockerignore, use multi-stage construction to separate compilation and runtime dependencies, and copy only the necessary configuration and executable files into the final image. These methods can effectively reduce mirror size, improve construction and deployment efficiency, and reduce security