My Shitty Code

Embracing the Messiness in Search of Epic Solutions

Tag: Docker

  • GCSFuse + Docker: “Error while creating mount source path ‘/a’: mkdir /a: file exists.”

    This post illustrates how you can mount a GCS bucket using GCSFuse on your host machine and expose it as a volume to a Docker container. PROBLEM You want to volume mount a FUSE-mounted directory to a container, for example: When attempting to run the container… … an error occurred: SOLUTION Unmount the existing FUSE-mounted […]

  • GCP + Container Registry: Pushing/Pulling Images

    PROBLEM You want to push a new image to Google Container Registry (GCR) or pull an existing image from GCR. SOLUTION Pushing a New Image to GCR Prepare your Dockerfile. Create an image and tag it with a path pointing to GCR within a project. There are several variations of GCR’s hostname (ex:,, […]

  • Docker: Executing Startup Script When Running Container Interactively

    PROBLEM When running the Docker container interactively (ex: docker run –rm -it myimage), you want to run a startup script every time. SOLUTION For Ubuntu, Debian and Centos images, write the startup script to /root/.bashrc: For Alpine image, it’s a little different because it uses Ash shell. Besides writing the startup script to /root/.profile, you […]

  • Docker: Handling Circular Dependency between Containers

    PROBLEM Let’s assume we are going to run 3 containers:- Nginx is used to serve cleaner URLs through reverse proxies so that users will access http://server/jenkins and http://server/nexus instead of remembering specific ports. So, the simplified docker-compose.yml looks like this:- While http://server/jenkins and http://server/nexus work flawlessly, the Jenkins container is unable to communicate with Nexus […]

  • Docker: Defining Custom Location for Named Volume

    PROBLEM Let’s assume we have the following docker-compose.yml: By the default, all Docker-managed named volumes are stored under the installed Docker directory… typically, /var/lib/docker/volumes/[path]. However, it is possible /var mount is low on disk space. SOLUTION It appears we can create a custom location for the given named volume:- Keep in mind /data/jenkins must be […]

  • Synology NAS: Running CrashPlan in Docker Container

    BACKGROUND The reason to run CrashPlan in Docker container is to prevent any future Synology’s DSM updates from breaking the CrashPlan app. Let’s assume the Synology NAS IP address is STEPS Diskstation Manager Log into Diskstation Manager: Install Docker. Mac SSH into Synology NAS. Install CrashPlan Docker container. Run CrashPlan Docker container. In […]