feat: upgrade to Ubuntu 24.04

.github/workflows/cd.yml

@@ -0,0 +1,63 @@
+name: Docker Image Deployment
+
+on:
+  push:
+    branches:
+      - 'main'
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            aoudiamoncef/ubuntu-sshd
+            ghcr.io/${{ github.repository }}/ubuntu-sshd
+
+      - name: Build and push to Docker Hub
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: aoudiamoncef/ubuntu-sshd:latest
+          labels: ${{ steps.meta.outputs.labels }}
+
+      - name: Build and push to GitHub Container Registry
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ghcr.io/${{ github.repository }}/ubuntu-sshd:latest
+          labels: ${{ steps.meta.outputs.labels }}
+
+      - name: Generate artifact attestation
+        uses: actions/attest-build-provenance@v1
+        with:
+          subject-name: ghcr.io/${{ github.repository }}/ubuntu-sshd
+          subject-digest: ${{ steps.push.outputs.digest }}
+          push-to-registry: true

.github/workflows/ci.yml

@@ -0,0 +1,35 @@
+name: Docker Image CI
+
+on:
+  pull_request:
+    branches:
+      - 'main'
+
+jobs:
+  build-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: |
+            aoudiamoncef/ubuntu-sshd
+            ghcr.io/${{ github.repository }}/ubuntu-sshd
+
+      - name: Build Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: false
+          tags: aoudiamoncef/ubuntu-sshd:pr-${{ github.event.number }}
+          labels: ${{ steps.meta.outputs.labels }}

.gitignore

@@ -0,0 +1,2 @@
+
+.DS_Store

Dockerfile

@@ -1,5 +1,5 @@
 # Use an official Ubuntu base image
-FROM ubuntu:22.04
+FROM ubuntu:24.04
 
 # Set environment variables to avoid interactive prompts during installation
 ENV DEBIAN_FRONTEND=noninteractive
@@ -8,19 +8,16 @@ ENV PASSWORD=changeme
 
 # Install OpenSSH server and clean up
 RUN apt-get update \
-    && apt-get install -y openssh-server iputils-ping telnet iproute2\
+    && apt-get install -y openssh-server iputils-ping telnet iproute2 \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 # Create the privilege separation directory and fix permissions
 RUN mkdir -p /run/sshd \
     && chmod 755 /run/sshd
 
-# Expose SSH port
-EXPOSE 22
-
-# Create the non-root user with the ability to set a password and authorized keys using environment variables
-RUN useradd -ms /bin/bash $SSH_USERNAME
+# Check if the user exists before trying to create it
+RUN if ! id -u $SSH_USERNAME > /dev/null 2>&1; then useradd -ms /bin/bash $SSH_USERNAME; fi
 
 # Set up SSH configuration
 RUN mkdir -p /home/$SSH_USERNAME/.ssh && chown $SSH_USERNAME:$SSH_USERNAME /home/$SSH_USERNAME/.ssh \
@@ -31,5 +28,8 @@ RUN mkdir -p /home/$SSH_USERNAME/.ssh && chown $SSH_USERNAME:$SSH_USERNAME /home
 COPY configure-ssh-user.sh /usr/local/bin/
 RUN chmod +x /usr/local/bin/configure-ssh-user.sh
 
+# Expose SSH port
+EXPOSE 22
+
 # Start SSH server
 CMD ["/usr/local/bin/configure-ssh-user.sh"]

README.md

@@ -4,7 +4,7 @@
 [![Docker Pulls](https://img.shields.io/docker/pulls/aoudiamoncef/ubuntu-sshd.svg)](https://hub.docker.com/r/aoudiamoncef/ubuntu-sshd)
 [![Maintenance](https://img.shields.io/badge/Maintained-Yes-green.svg)](https://github.com/aoudiamoncef/ubuntu-sshd)
 
-This Docker image provides an Ubuntu 22.04 base with SSH server enabled. It allows you to easily create SSH-accessible containers via SSH keys or with a default username and password.
+This Docker image provides an Ubuntu 24.04 base with SSH server enabled. It allows you to easily create SSH-accessible containers via SSH keys or with a default username and password.
 
 ## Usage
 

configure-ssh-user.sh

@@ -5,15 +5,23 @@
 : ${PASSWORD:=changeme}
 
 # Create the user with the provided username and set the password
-useradd -ms /bin/bash $SSH_USERNAME
-echo "$SSH_USERNAME:$PASSWORD" | chpasswd
+if id "$SSH_USERNAME" &>/dev/null; then
+    echo "User $SSH_USERNAME already exists"
+else
+    useradd -ms /bin/bash "$SSH_USERNAME"
+    echo "$SSH_USERNAME:$PASSWORD" | chpasswd
+    echo "User $SSH_USERNAME created with the provided password"
+fi
 
 # Set the authorized keys from the AUTHORIZED_KEYS environment variable (if provided)
 if [ -n "$AUTHORIZED_KEYS" ]; then
     mkdir -p /home/$SSH_USERNAME/.ssh
     echo "$AUTHORIZED_KEYS" > /home/$SSH_USERNAME/.ssh/authorized_keys
     chown -R $SSH_USERNAME:$SSH_USERNAME /home/$SSH_USERNAME/.ssh
+    chmod 700 /home/$SSH_USERNAME/.ssh
+    chmod 600 /home/$SSH_USERNAME/.ssh/authorized_keys
+    echo "Authorized keys set for user $SSH_USERNAME"
 fi
 
 # Start the SSH server
-/usr/sbin/sshd -D
+exec /usr/sbin/sshd -D