Optimize final image: runtime libs instead of -dev, pin base image

The final runtime stage installed full -dev packages (headers, static
archives, build-time deps) when only the runtime shared libraries are
needed. Replace them with the runtime-only equivalents, verified via
`ldd` on the built p2pool binary against the pinned base.

Changes:
- Final stage: install runtime libs instead of -dev packages
  (libuv1t64, libzmq5, libsodium23, libpgm-5.3-0t64, libnorm1t64,
  libgssapi-krb5-2, libcurl4t64, libidn2-0). Note the t64 names on
  Ubuntu 24.04 due to the 64-bit time_t transition.
- Pin both stages to ubuntu:24.04 (current LTS) instead of
  ubuntu:latest for reproducible builds. Renovate's docker manager
  keeps this current.
- Add --depth 1 --shallow-submodules to the git clone for faster,
  lighter source checkout.

Local verification (native arm64):
- Build succeeds (exit 0).
- `docker run --rm p2pool:test --help` prints "P2Pool v4.17" + usage.
- `ldd` on the binary in the final image: all libs resolve, none missing.
- Image size: 317MB -> 188MB (-129MB, -41%).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.github/dependabot.yml

@@ -1,11 +0,0 @@
-version: 2
-updates:
-  # Maintain dependencies for GitHub Actions
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "daily"
-    groups:
-      dependency-updates:
-        patterns:
-          - "*"

.github/workflows/build-image-on-push.yml

@@ -37,14 +37,14 @@ jobs:
           echo "DIGEST_NAME=amd64" >> $GITHUB_ENV
       -
         name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3.9.0
+        uses: docker/setup-buildx-action@v4.1.0
       -
         name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
       -
         name: Test build of image
         id: build
-        uses: docker/build-push-action@v6.14.0
+        uses: docker/build-push-action@v7.2.0
         with:
           push: false
           load: true

.github/workflows/update-image-on-push.yml

@@ -34,26 +34,26 @@ jobs:
           echo "DIGEST_NAME=amd64" >> $GITHUB_ENV
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: |
             ${{ env.GHCR_REPO }}
       -
         name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3.9.0
+        uses: docker/setup-buildx-action@v4.1.0
       -
         name: Login to GitHub Container Registry
-        uses: docker/login-action@v3.3.0
+        uses: docker/login-action@v4.2.0
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
       -
         name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
       -
         name: Build and and push by digest
-        uses: docker/build-push-action@v6.14.0
+        uses: docker/build-push-action@v7.2.0
         id: build
         with:
           outputs: type=image,"name=${{ env.GHCR_REPO }}",push-by-digest=true,name-canonical=true,push=true
@@ -68,7 +68,7 @@ jobs:
           touch "${{ runner.temp }}/digests/${digest#sha256:}"
 
       - name: Upload digest
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: digests-${{ env.DIGEST_NAME }}
           path: ${{ runner.temp }}/digests/*
@@ -81,31 +81,31 @@ jobs:
       - build
     steps:
       - name: Download digests
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v8
         with:
           path: ${{ runner.temp }}/digests
           pattern: digests-*
           merge-multiple: true
 
       - name: Login to GHCR
-        uses: docker/login-action@v3.3.0
+        uses: docker/login-action@v4.2.0
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3.9.0
+        uses: docker/setup-buildx-action@v4.1.0
 
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
       
       - name: Get p2pool release tag
         run: echo P2POOL_TAG="$(awk -F '=' '/P2POOL_BRANCH=/ {print $2}' Dockerfile)" >> $GITHUB_ENV
 
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: |
             ${{ env.GHCR_REPO }}

Dockerfile

@@ -1,7 +1,7 @@
-ARG P2POOL_BRANCH=v4.3
+ARG P2POOL_BRANCH=v4.17
 
-# Select latest Ubuntu LTS for the build image base
-FROM ubuntu:latest as build
+# Pin to the latest Ubuntu LTS for the build image base (kept current by Renovate)
+FROM ubuntu:24.04 as build
 LABEL author="sethforprivacy@protonmail.com" \
       maintainer="sethforprivacy@protonmail.com"
 
@@ -24,20 +24,22 @@ WORKDIR /p2pool
 
 # Git pull p2pool source at specified tag/branch
 ARG P2POOL_BRANCH
-RUN git clone --recursive --branch ${P2POOL_BRANCH} https://github.com/SChernykh/p2pool .
+RUN git clone --recursive --depth 1 --shallow-submodules --branch ${P2POOL_BRANCH} https://github.com/SChernykh/p2pool .
 
 # Make static p2pool binary
 ARG NPROC
 RUN test -z "$NPROC" && nproc > /nproc || echo -n "$NPROC" > /nproc && mkdir build && cd build && cmake .. && make -j"$(cat /nproc)"
 
-# Select latest Ubuntu LTS for the image base
-FROM ubuntu:latest
+# Pin to the latest Ubuntu LTS for the image base (kept current by Renovate)
+FROM ubuntu:24.04
 
-# Install remaining dependencies
+# Install only the runtime shared libraries that the p2pool binary links against
+# (runtime equivalents of the build-stage -dev packages, verified via ldd on the
+# built binary against the pinned Ubuntu 24.04 base)
 RUN apt-get update \
     && apt-get upgrade -y \
-    && apt-get install --no-install-recommends -y libuv1-dev libzmq3-dev libsodium-dev \
-    libpgm-dev libnorm-dev libgss-dev libcurl4-openssl-dev libidn2-0-dev \
+    && apt-get install --no-install-recommends -y libuv1t64 libzmq5 libsodium23 \
+    libpgm-5.3-0t64 libnorm1t64 libgssapi-krb5-2 libcurl4t64 libidn2-0 \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 

README.md

@@ -3,21 +3,11 @@ A simple and straightforward Dockerized [p2pool](https://github.com/SChernykh/p2
 
 ## Actions
 
-[![Daily Update Rebuild](https://github.com/sethsimmons/p2pool-docker//actions/workflows/update-daily.yml/badge.svg)](https://github.com/sethsimmons/p2pool-docker/actions/workflows/update-daily.yml)  
-[![Weekly Update Rebuild](https://github.com/sethsimmons/p2pool-docker//actions/workflows/update-base-image.yml/badge.svg)](https://github.com/sethsimmons/p2pool-docker/actions/workflows/update-base-image.yml)  
-[![Latest Dockerfile build](https://github.com/sethsimmons/p2pool-docker//actions/workflows/update-image-on-push.yml/badge.svg)](https://github.com/sethsimmons/p2pool-docker/actions/workflows/update-image-on-push.yml)  
-[![Container security scan with Trivy](https://github.com/sethsimmons/p2pool-docker//actions/workflows/trivy-analysis.yml/badge.svg)](https://github.com/sethsimmons/p2pool-docker/actions/workflows/trivy-analysis.yml)
-
-## Docker
-
-![Docker Pulls](https://img.shields.io/docker/pulls/sethsimmons/p2pool)  
-![Docker Image Size (latest by date)](https://img.shields.io/docker/image-size/sethsimmons/p2pool)  
-![Docker Image Version (latest by date)](https://img.shields.io/docker/v/sethsimmons/p2pool)  
+[![Daily Update Rebuild](https://github.com/sethforprivacy/p2pool-docker//actions/workflows/update-daily.yml/badge.svg)](https://github.com/sethforprivacy/p2pool-docker/actions/workflows/update-daily.yml)  
+[![Weekly Update Rebuild](https://github.com/sethforprivacy/p2pool-docker//actions/workflows/update-base-image.yml/badge.svg)](https://github.com/sethforprivacy/p2pool-docker/actions/workflows/update-base-image.yml)  
 
 # Docker Hub
-This repo is used to build the images available at:
-
-https://hub.docker.com/r/sethsimmons/p2pool
+This repo is used to build the images available here on GHCR.
 
 # Tags
 
@@ -28,7 +18,7 @@ https://hub.docker.com/r/sethsimmons/p2pool
 *NOTE: Remember to replace the host address with your own node (if desired) as well as the Monero address for the `--wallet` flag, or else you'll be making a kind hashrate donation to me.*
 
 ```bash
-docker run -d --name="p2pool" -p 3333:3333 -p 37889:37889 -v p2pool-data:/home/p2pool -v /dev/hugepages:/dev/hugepages:rw sethsimmons/p2pool:latest --host 5.9.120.18 --rpc-port 18089 --wallet 468ydghFfthE3UTc53eF5MP9UyrMcUiAHP5kizVYJsej5XGaXBoAAEzUHCcUF7t3E3RrYAX8Rs1ujhBdcvMpZSbH8qkb55R --stratum 0.0.0.0:3333 --p2p 0.0.0.0:37889 --addpeers 65.21.227.114:37889,node.sethforprivacy.com:37889
+docker run -d --name="p2pool" -p 3333:3333 -p 37889:37889 -v p2pool-data:/home/p2pool -v /dev/hugepages:/dev/hugepages:rw ghcr.io/sethforprivacy/p2pool:latest --host 5.9.120.18 --rpc-port 18089 --wallet 468ydghFfthE3UTc53eF5MP9UyrMcUiAHP5kizVYJsej5XGaXBoAAEzUHCcUF7t3E3RrYAX8Rs1ujhBdcvMpZSbH8qkb55R --stratum 0.0.0.0:3333 --p2p 0.0.0.0:37889 --addpeers 65.21.227.114:37889,node.sethforprivacy.com:37889
 ```
 
 # Copyrights

examples/docker-compose.yml

@@ -1,7 +1,6 @@
-version: '3.5'
 services:
   monerod:
-    image: sethsimmons/simple-monerod:latest
+    image: ghcr.io/sethforprivacy/simple-monerod:latest
     restart: unless-stopped
     container_name: monerod
     volumes:
@@ -21,7 +20,7 @@ services:
       - "--out-peers=50"
   
   p2pool:
-    image: sethsimmons/p2pool:latest
+    image: ghcr.io/sethforprivacy/p2pool:latest
     restart: unless-stopped
     container_name: p2pool
     tty: true
@@ -52,15 +51,6 @@ services:
     volumes:
         - tor-keys:/var/lib/tor/hidden_service/
 
-  autoheal:
-    image: willfarrell/autoheal:latest
-    container_name: autoheal
-    restart: unless-stopped
-    environment:
-        AUTOHEAL_CONTAINER_LABEL: all
-    volumes:
-        - "/var/run/docker.sock:/var/run/docker.sock"
-
   watchtower:
     image: containrrr/watchtower:latest
     container_name: watchtower