如何在运行时将项目源码添加至Docker容器？

Hey there! Since you need to add your project source code at runtime (instead of build time) while keeping that complex build process inside the container, here are a couple of practical approaches tailored to your setup:

1. Use Docker Bind Mounts (Most Direct Approach) #

This method maps your local source code directory directly into the container at runtime, letting your existing build script process the fresh code each time the container starts.

Step 1: Adjust Your Dockerfile #

Remove the COPY line that adds your source code during build, and update the startup command to run your build script before starting Apache. Here's the revised Dockerfile:

FROM base-image
RUN mkdir -p /proj/branches/www
RUN mkdir -p /proj/branches/mybranch  # Ensure the mount target exists
RUN chown root:www-data -R /proj
COPY config-and-build.sh .
EXPOSE 80
# Run build script first, then start Apache
CMD ["/bin/sh", "-c", "/config-and-build.sh && apachectl -D FOREGROUND"]

Step 2: Run the Container with Mounted Source #

Use the -v flag to bind your local source directory to the container's /proj/branches/mybranch path:

docker run -v /path/to/your/local/proj/branches/mybranch:/proj/branches/mybranch -p 80:80 your-built-image

Key Notes: #

• Permissions: If your local directory has different user/group permissions than the container, add a chown step inside config-and-build.sh to fix access issues (or run the container with docker run -u $(id -u):$(id -g) ... to match your local user).
• Build Consistency: Since the build runs on container startup, make sure all build dependencies are already installed in your base-image (they should be, since you previously ran the build in the container).

2. Use Named Volumes (For Persistent/Cached Builds) #

If you want to keep a persistent copy of your source code in a Docker-managed volume (instead of binding directly to your local filesystem), use a named volume:

Create the Volume First #

docker volume create my-project-source

Copy Your Source Code to the Volume #

docker run --rm -v my-project-source:/proj/branches/mybranch -v /path/to/your/local/proj/branches/mybranch:/local-src busybox cp -r /local-src/. /proj/branches/mybranch/

Run the Container with the Named Volume #

docker run -v my-project-source:/proj/branches/mybranch -p 80:80 your-built-image

This is useful if you need to share the source code across multiple containers or want Docker to handle storage management.

Quick Debug Tip #

To verify your source code is mounted correctly before running the full build, start an interactive shell in the container:

docker run -it -v /path/to/your/local/proj/branches/mybranch:/proj/branches/mybranch your-built-image /bin/bash

Then check if /proj/branches/mybranch contains your files with ls -la.

内容的提问来源于stack exchange，提问作者zunbeltz