init

Dockerfile

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+FROM golang:1.24
+RUN git clone https://github.com/iceBear67/bubble && cd bubble/ && bash ./build.sh
+
+FROM debian:11
+COPY --from=0 /bubble/src/target/client /bin/bubble
+RUN <<EOF
+apt-get update && apt-get upgrade
+apt-get install -y curl jq neovim htop fish tmux sudo git
+useradd -m -s /bin/fish user
+echo "user ALL=(ALL) NOPASSWD: ALL" > /etc/sudoers.d/user.conf
+EOF
+COPY ./init.fish /home/user/.init.fish
+

init.fish

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+if ! cat /etc/passwd | grep -E "^user"
+    echo "User was not created correctly. Creating user..."
+    useradd -m -s /bin/fish user
+    if test ! -e /etc/sudoers.d/user.conf
+        echo "Setting sudo permissions"
+        mkdir -p /etc/sudoers.d/
+        echo "user ALL=(ALL) NOPASSWD: ALL" >/etc/sudoers.d/user.conf
+    end
+    echo "Due to abnormal user creation, auto configuration guide is not available in this setup."
+    echo "Try 'bubble destroy' for a new container if needed."
+end
+
+function resume
+    if sudo -u user tmux has-session -t 0
+        if sudo -u user tmux ls | grep -E "^0.*attached)"
+            echo "The default tmux session has been attached, dropping you to a normal shell."
+            cd /home/user && sudo -u user /bin/fish
+        else
+            sudo -u user tmux attach -t 0
+        end
+    else
+        sudo -u user tmux new-session -c /home/user /bin/fish
+    end
+end
+
+resume

user.fish

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+function install-docker
+    if test -e /bin/docker
+        echo "Docker is already present at /bin/docker."
+        return
+    end
+    echo "Installing docker in 3s."
+    sleep 3s
+    echo "[DOCKER] Updating software registry."
+    sudo apt-get update
+    sudo apt-get install ca-certificates
+    echo "[DOCKER] Updating package manager keyrings"
+    sudo install -m 0755 -d /etc/apt/keyrings
+    echo "[DOCKER] Adding trust for docker repository"
+    sudo curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc
+    sudo chmod a+r /etc/apt/keyrings/docker.asc
+    echo "[DOCKER] Adding docker repository"
+    bash -c 'echo \
+        "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/debian \
+        $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
+        sudo tee /etc/apt/sources.list.d/docker.list > /dev/null'
+    sudo apt-get update
+    echo "[DOCKER] Installing docker"
+    if sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
+        echo "[DOCKER] Docker should be installed successfully"
+    else
+        echo "Unexpected error."
+    end
+end