feat: add 5 misc-tail Selkies images (spotube, gitqlient, calligra, bitcoin-knots, mullvad-browser)

images/bitcoin-knots-selkies/Dockerfile

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+# StreamSpace Bitcoin Knots with Selkies-GStreamer (WebRTC)
+#
+# Bitcoin Knots is a derivative of Bitcoin Core with additional
+# features, frequently rebased. Distributed as a self-contained
+# tar.gz from bitcoinknots/bitcoin GitHub releases — extract to
+# /opt/bitcoin-knots/ and symlink the GUI binary.
+#
+# Mount your data dir at runtime (e.g. -v /host/bitcoin:/home/user/.bitcoin)
+# to avoid re-downloading the blockchain on every container start.
+
+FROM ghcr.io/streamspace-dev/selkies-base:latest
+
+LABEL org.opencontainers.image.title="StreamSpace Bitcoin Knots"
+LABEL org.opencontainers.image.description="Bitcoin Knots full-node + GUI wallet with Selkies-GStreamer (WebRTC) streaming for StreamSpace"
+LABEL org.opencontainers.image.version="1.0.0"
+LABEL org.opencontainers.image.vendor="StreamSpace"
+LABEL org.opencontainers.image.source="https://github.com/streamspace-dev/streamspace-templates"
+
+USER root
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN set -eux; \
+    tar_url="$(curl -fsSL https://api.github.com/repos/bitcoinknots/bitcoin/releases/latest \
+        | jq -r '.assets[] | select(.name | test("^bitcoin-.*-x86_64-linux-gnu\\.tar\\.gz$")) | .browser_download_url' \
+        | head -1)"; \
+    if [ -z "${tar_url}" ]; then echo "Could not resolve Bitcoin Knots tarball URL" >&2; exit 1; fi; \
+    curl -fsSL -o /tmp/bitcoin-knots.tar.gz "${tar_url}"; \
+    install -d -m 0755 /opt; \
+    tar xzf /tmp/bitcoin-knots.tar.gz -C /opt; \
+    rm -f /tmp/bitcoin-knots.tar.gz; \
+    # Tarball extracts to a versioned dir (e.g. bitcoin-29.3.knots20260210).
+    # Rename to /opt/bitcoin-knots/ for a stable CMD path.
+    mv /opt/bitcoin-* /opt/bitcoin-knots; \
+    ln -s /opt/bitcoin-knots/bin/bitcoin-qt /usr/local/bin/bitcoin-qt
+
+USER user
+CMD ["bitcoin-qt"]

images/bitcoin-knots-selkies/PLATFORMS

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+linux/amd64

images/calligra-selkies/Dockerfile

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+# StreamSpace Calligra with Selkies-GStreamer (WebRTC)
+#
+# Calligra is the KDE productivity & creative suite (Words, Sheets,
+# Stage, Karbon, Plan). The `calligra` meta-package pulls all the
+# core apps in. Heavyweight install (~600 MB) but covers an entire
+# office workflow in one image.
+
+FROM ghcr.io/streamspace-dev/selkies-base:latest
+
+LABEL org.opencontainers.image.title="StreamSpace Calligra"
+LABEL org.opencontainers.image.description="Calligra KDE productivity suite with Selkies-GStreamer (WebRTC) streaming for StreamSpace"
+LABEL org.opencontainers.image.version="1.0.0"
+LABEL org.opencontainers.image.vendor="StreamSpace"
+LABEL org.opencontainers.image.source="https://github.com/streamspace-dev/streamspace-templates"
+
+USER root
+ARG DEBIAN_FRONTEND=noninteractive
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends calligra && \
+    apt-get clean && rm -rf /var/lib/apt/lists/*
+
+USER user
+# calligra meta-package doesn't ship a single launcher — open the
+# Words app by default; users can launch other Calligra apps from
+# inside it or via the menu.
+CMD ["calligrawords"]

images/calligra-selkies/PLATFORMS

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+linux/amd64

images/gitqlient-selkies/Dockerfile

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+# StreamSpace GitQlient with Selkies-GStreamer (WebRTC)
+#
+# GitQlient is a Qt-based git GUI. Vendor .deb from francescmm/GitQlient
+# GitHub releases.
+
+FROM ghcr.io/streamspace-dev/selkies-base:latest
+
+LABEL org.opencontainers.image.title="StreamSpace GitQlient"
+LABEL org.opencontainers.image.description="GitQlient Qt-based git GUI with Selkies-GStreamer (WebRTC) streaming for StreamSpace"
+LABEL org.opencontainers.image.version="1.0.0"
+LABEL org.opencontainers.image.vendor="StreamSpace"
+LABEL org.opencontainers.image.source="https://github.com/streamspace-dev/streamspace-templates"
+
+USER root
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN set -eux; \
+    deb_url="$(curl -fsSL https://api.github.com/repos/francescmm/GitQlient/releases/latest \
+        | jq -r '.assets[] | select(.name | test("^gitqlient_.*_amd64\\.deb$")) | .browser_download_url' \
+        | head -1)"; \
+    if [ -z "${deb_url}" ]; then echo "Could not resolve GitQlient .deb URL" >&2; exit 1; fi; \
+    curl -fsSL -o /tmp/gitqlient.deb "${deb_url}"; \
+    apt-get update; \
+    apt-get install -y --no-install-recommends /tmp/gitqlient.deb; \
+    rm -f /tmp/gitqlient.deb; \
+    apt-get clean && rm -rf /var/lib/apt/lists/*
+
+USER user
+CMD ["gitqlient"]

images/gitqlient-selkies/PLATFORMS

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+linux/amd64

images/mullvad-browser-selkies/Dockerfile

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+# StreamSpace Mullvad Browser with Selkies-GStreamer (WebRTC)
+#
+# Mullvad Browser is Tor Browser derivative collaboration between Tor
+# Project and Mullvad VPN — designed to use without the Tor network
+# (intended for users who want Tor's anti-fingerprinting against a
+# regular VPN like Mullvad). Mullvad's apt repo at
+# repository.mullvad.net/deb/stable also ships mullvad-vpn and the
+# alpha browser variant.
+
+FROM ghcr.io/streamspace-dev/selkies-base:latest
+
+LABEL org.opencontainers.image.title="StreamSpace Mullvad Browser"
+LABEL org.opencontainers.image.description="Mullvad Browser (Tor-derived privacy browser) with Selkies-GStreamer (WebRTC) streaming for StreamSpace"
+LABEL org.opencontainers.image.version="1.0.0"
+LABEL org.opencontainers.image.vendor="StreamSpace"
+LABEL org.opencontainers.image.source="https://github.com/streamspace-dev/streamspace-templates"
+
+USER root
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN set -eux; \
+    install -d -m 0755 /etc/apt/keyrings; \
+    curl -fsSL https://repository.mullvad.net/deb/mullvad-keyring.asc \
+        | gpg --dearmor -o /etc/apt/keyrings/mullvad-keyring.gpg; \
+    echo "deb [arch=amd64 signed-by=/etc/apt/keyrings/mullvad-keyring.gpg] https://repository.mullvad.net/deb/stable stable main" \
+        > /etc/apt/sources.list.d/mullvad.list; \
+    apt-get update && apt-get install -y --no-install-recommends mullvad-browser; \
+    apt-get clean && rm -rf /var/lib/apt/lists/*
+
+USER user
+CMD ["mullvad-browser"]

images/mullvad-browser-selkies/PLATFORMS

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+linux/amd64

images/spotube-selkies/Dockerfile

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+# StreamSpace Spotube with Selkies-GStreamer (WebRTC)
+#
+# Spotube is a third-party Spotify client that uses public APIs +
+# YouTube Music as the audio backend (no Spotify Premium required).
+# Distributed as AppImage on x86_64 (the .deb on GitHub Releases is
+# aarch64-only). Standard --appimage-extract pattern.
+
+FROM ghcr.io/streamspace-dev/selkies-base:latest
+
+LABEL org.opencontainers.image.title="StreamSpace Spotube"
+LABEL org.opencontainers.image.description="Spotube Spotify client with Selkies-GStreamer (WebRTC) streaming for StreamSpace"
+LABEL org.opencontainers.image.version="1.0.0"
+LABEL org.opencontainers.image.vendor="StreamSpace"
+LABEL org.opencontainers.image.source="https://github.com/streamspace-dev/streamspace-templates"
+
+USER root
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN set -eux; \
+    img_url="$(curl -fsSL https://api.github.com/repos/KRTirtho/spotube/releases/latest \
+        | jq -r '.assets[] | select(.name == "Spotube-linux-x86_64.AppImage") | .browser_download_url' \
+        | head -1)"; \
+    if [ -z "${img_url}" ]; then echo "Could not resolve Spotube AppImage URL" >&2; exit 1; fi; \
+    cd /tmp; \
+    curl -fsSL -o spotube.AppImage "${img_url}"; \
+    chmod +x spotube.AppImage; \
+    ./spotube.AppImage --appimage-extract >/dev/null; \
+    if [ -d squashfs-root ] && [ ! -L squashfs-root ]; then \
+        mv squashfs-root /opt/spotube; \
+    else \
+        mv AppDir /opt/spotube; \
+    fi; \
+    rm -rf spotube.AppImage AppDir squashfs-root
+
+USER user
+CMD ["/opt/spotube/AppRun"]

images/spotube-selkies/PLATFORMS

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+linux/amd64