DockerFile has error on "copy root/ /" with baseimage-rdesktop-web:arm64v8-focal

LSIO Discussion Container Support
1

I get the following error from a cut & paste from other example Dockerfile’s and I’m not really sure what the intention of the “copy root/ /” to figure out and debug. This is running on RasPi 4-B Ubuntu 22.04

Step 7/11 : COPY root/ /
COPY failed: file not found in build context or excluded by .dockerignore: stat root/: file does not exist

Any suggestions?

The full Dockerfile …

FROM ghcr.io/linuxserver/baseimage-rdesktop-web:arm64v8-focal

LABEL org.opencontainers.image.authors="gsheets@magentaflight.com"
LABEL org.opencontainers.image.source="local"
LABEL org.opencontainers.image.title="Container hosted Obsidian MD"
LABEL org.opencontainers.image.description="Hosted Obsidian instance allowing access via web browser"

RUN \
    echo "**** install packages ****" && \
        # Update and install extra packages.
        apt-get update && \
        apt-get install -y --no-install-recommends \
            # Packages needed to download and extract obsidian.
            curl \
            libnss3 \
            zlib1g-dev \
            # Install Chrome dependencies.
            dbus-x11 \
            uuid-runtime && \
    echo "**** cleanup ****" && \
        apt-get autoclean && \
        rm -rf \
        /var/lib/apt/lists/* \
        /var/tmp/* \
        /tmp/*

# set version label
ARG OBSIDIAN_VERSION=0.15.9

RUN \
    echo "**** download obsidian ****" && \
        curl \
        https://github.com/obsidianmd/obsidian-releases/releases/download/v0.15.9/Obsidian-0.15.9-arm64.AppImage \
#        https://github.com/obsidianmd/obsidian-releases/releases/download/v$OBSIDIAN_VERSION/Obsidian-$OBSIDIAN_VERSION.AppI
mage \
        -L \
        -o obsidian.AppImage

RUN \
    echo "**** extract obsidian ****" && \
        chmod +x /obsidian.AppImage && \
        /obsidian.AppImage --appimage-extract

ENV \
    CUSTOM_PORT="8080" \
    GUIAUTOSTART="true" \
    HOME="/vaults" \
    TITLE="Obsidian v$OBSIDIAN_VERSION"

# add local files
COPY root / /

EXPOSE 8080
EXPOSE 27123
EXPOSE 27124
VOLUME ["/config","/vaults"]

full build output

> docker build -t obsidian-remote_arm64 .

Sending build context to Docker daemon 60.42kB
Step 1/11 : FROM ghcr.io/linuxserver/baseimage-rdesktop-web:arm64v8-focal
arm64v8-focal: Pulling from linuxserver/baseimage-rdesktop-web
Digest: sha256:d5d2f359c3abef40342316f38ad16d07c054edcf58f6a74f471c7042d6db2604
Status: Downloaded newer image for ghcr.io/linuxserver/baseimage-rdesktop-web:arm64v8-focal
---> 2beecc860e8d
Step 2/11 : RUN echo "**** install packages " && apt-get update && apt-get install -y --no-install-recommends curl libnss3 zlib1g-dev dbus-x11 uuid-runtime && echo " cleanup " && apt-get autoclean && rm -rf /var/lib/apt/lists/ /var/tmp/ /tmp/
---> Using cache
---> 595637b5dbd3
Step 3/11 : ARG OBSIDIAN_VERSION=0.15.9
---> Using cache
---> 39f122c13e82
Step 4/11 : RUN echo "*** download obsidian " && curl https://github.com/obsidianmd/obsidian-releases/releases/download/v0.15.9/Obsidian-0.15.9-arm64.AppImage -L -o obsidian.AppImage
---> Using cache
---> ba036bf885cc
Step 5/11 : RUN echo " extract obsidian ****" && chmod +x /obsidian.AppImage && /obsidian.AppImage --appimage-extract
---> Using cache
---> 5ecae08e5b8c
Step 6/11 : ENV CUSTOM_PORT="8080" GUIAUTOSTART="true" HOME="/vaults" TITLE="Obsidian v$OBSIDIAN_VERSION"
---> Using cache
---> 5008893acacd
Step 7/11 : COPY root/ /
COPY failed: file not found in build context or excluded by .dockerignore: stat root/: file does not exist