fithwum/alpine-base
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fithwum
2025-07-06 08:54:33 -07:00
parent a1a0e41bf3
commit 8e986c7b8b
3 changed files with 16 additions and 29 deletions
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1
.gitea/workflows/base-build.yml
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@@ -23,6 +23,7 @@ jobs:
steps: steps:
- name: Checkout repo - name: Checkout repo
uses: actions/checkout@v3 uses: actions/checkout@v3
- name: Build custom Alpine builder image - name: Build custom Alpine builder image
run: | run: |
docker build -t alpine-builder:latest . docker build -t alpine-builder:latest .

18
base-image-script/alpine-base_pt1.sh
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@@ -5,7 +5,7 @@ set -e
# Alpine version # Alpine version
ALPINE_VERSION="v3.20" ALPINE_VERSION="v3.20"
ROOTFS_DIR="alpine-rootfs" BUILD_DIR="/mnt/alpine-rootfs" # <--- use safe path NOT in bind mount
OUTPUT_TAR="alpine-base.tar.gz" OUTPUT_TAR="alpine-base.tar.gz"
PACKAGES="bash curl ca-certificates nano" PACKAGES="bash curl ca-certificates nano"
@@ -20,19 +20,19 @@ sudo ./alpine-make-rootfs \
--branch "$ALPINE_VERSION" \ --branch "$ALPINE_VERSION" \
--mirror http://dl-cdn.alpinelinux.org/alpine \ --mirror http://dl-cdn.alpinelinux.org/alpine \
--packages "$PACKAGES" \ --packages "$PACKAGES" \
"$ROOTFS_DIR" "$BUILD_DIR"
echo "[INFO] Binding system directories for chroot..." echo "[INFO] Binding system directories for chroot..."
sudo mount --bind /dev "$ROOTFS_DIR/dev" sudo mount --bind /dev "$BUILD_DIR/dev"
sudo mount --bind /proc "$ROOTFS_DIR/proc" sudo mount --bind /proc "$BUILD_DIR/proc"
sudo mount --bind /sys "$ROOTFS_DIR/sys" sudo mount --bind /sys "$BUILD_DIR/sys"
echo "[INFO] Copying part 2 script into chroot..." echo "[INFO] Copying part 2 script into chroot..."
sudo cp base-image-script/alpine-base_pt2.sh "$ROOTFS_DIR/alpine-base_pt2.sh" sudo cp base-image-script/alpine-base_pt2.sh "$BUILD_DIR/alpine-base_pt2.sh"
sudo chmod +x "$ROOTFS_DIR/alpine-base_pt2.sh" sudo chmod +x "$BUILD_DIR/alpine-base_pt2.sh"
echo "[INFO] Entering chroot. Run 'exit' when done." echo "[INFO] Entering chroot. Run 'exit' when done."
sudo chroot "$ROOTFS_DIR" /alpine-base_pt2.sh sudo chroot "$BUILD_DIR" /alpine-base_pt2.sh
echo "[INFO] Continuing with packaging after chroot..." echo "[INFO] Continuing with packaging after chroot..."
bash base-image-script/alpine-base_pt3.sh "$ROOTFS_DIR" "$OUTPUT_TAR" bash base-image-script/alpine-base_pt3.sh "$BUILD_DIR" "$OUTPUT_TAR"

26
base-image-script/alpine-base_pt3.sh
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@@ -3,35 +3,21 @@
# All rights reserved # All rights reserved
set -e set -e
# Auto-detect rootfs dir if not passed as arg ROOTFS_DIR="${1:-/mnt/alpine-rootfs}"
if [ -n "$1" ]; then TARBALL="/workspace/output/alpine-base.tar.gz" # <-- store output in workspace for CI
ROOTFS_DIR="$1"
else
ROOTFS_DIR=$(find . -maxdepth 1 -type d -name "alpine-rootfs" | sed 's|^\./||' | head -n 1)
if [ -z "$ROOTFS_DIR" ]; then
echo "[ERROR] No alpine-rootfs directory found!"
exit 1
fi
fi
# Define output tarball location (adjust as needed)
TARBALL="/output/${ROOTFS_DIR}.tar.gz"
echo "[INFO] Unmounting system directories (ignore errors)..." echo "[INFO] Unmounting system directories (ignore errors)..."
for dir in dev proc sys; do for dir in dev proc sys; do
sudo umount -lf "$ROOTFS_DIR/$dir" 2>/dev/null || true sudo umount -lf "$ROOTFS_DIR/$dir" 2>/dev/null || true
done done
echo "[INFO] Removing chroot script if exists..." echo "[INFO] Cleaning up chroot script..."
sudo rm -f "$ROOTFS_DIR/alpine-base_pt2.sh" 2>/dev/null || true sudo rm -f "$ROOTFS_DIR/alpine-base_pt2.sh"
echo "[INFO] Rootfs size:" echo "[INFO] Rootfs size:"
du -sh "$ROOTFS_DIR" du -sh "$ROOTFS_DIR"
echo "[INFO] Creating compressed base image tarball..." echo "[INFO] Creating tarball: $TARBALL"
sudo tar -czf "$TARBALL" -C "$ROOTFS_DIR" . sudo tar -czf "$TARBALL" -C "$ROOTFS_DIR" .
echo "[INFO] Tarball size:" echo "[INFO] Tarball ready for CI: $TARBALL"
du -sh "$TARBALL"
echo "[INFO] Tarball ready for CI to upload: $TARBALL"