Dockerfile aktualisiert

Dockerfile

@@ -1,38 +1,49 @@
 # syntax=docker/dockerfile:1
 
-FROM alpine:3.23
+FROM alpine:3.23 AS rootfs-stage
 
-ARG TARGETARCH
 ARG S6_OVERLAY_VERSION="3.2.2.0"
 ARG ROOTFS=/root-out
 ARG REL=v3.23
+ARG ARCH=x86_64
 ARG MIRROR=http://dl-cdn.alpinelinux.org/alpine
-ARG PACKAGES=alpine-baselayout,alpine-keys,apk-tools,busybox,libc-utils,bash,xz,curl,ca-certificates
+ARG PACKAGES=alpine-baselayout,\
+alpine-keys,\
+apk-tools,\
+busybox,\
+libc-utils
 
-# map arch
-RUN case "${TARGETARCH}" in \
-      amd64)  echo "x86_64"  > /arch ;; \
-      arm64)  echo "aarch64" > /arch ;; \
-      *) echo "unsupported arch" && exit 1 ;; \
-    esac
+# install packages
+RUN \
+  apk add --no-cache \
+    bash \
+    xz
 
 # build rootfs
-RUN apk add --no-cache ${PACKAGES//,/ }
+RUN \
+  mkdir -p "${ROOTFS}/etc/apk" && \
+  { \
+    echo "${MIRROR}/${REL}/main"; \
+    echo "${MIRROR}/${REL}/community"; \
+  } > "${ROOTFS}/etc/apk/repositories" && \
+  apk --root "${ROOTFS}" --no-cache --keys-dir /etc/apk/keys add --arch ${ARCH} --initdb ${PACKAGES//,/ } && \
+  sed -i -e 's/^root::/root:!:/' /root-out/etc/shadow
 
-# s6 overlay
-RUN ARCH="$(cat /arch)" && \
-    curl -fsSL https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-noarch.tar.xz \
-      | tar -C / -Jxpf - && \
-    curl -fsSL https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-${ARCH}.tar.xz \
-      | tar -C / -Jxpf -
+# add s6 overlay
+ADD https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-noarch.tar.xz /tmp
+RUN tar -C /root-out -Jxpf /tmp/s6-overlay-noarch.tar.xz
+ADD https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-${ARCH}.tar.xz /tmp
+RUN tar -C /root-out -Jxpf /tmp/s6-overlay-${ARCH}.tar.xz
 
 # add s6 optional symlinks
 ADD https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-symlinks-noarch.tar.xz /tmp
-RUN tar -C / -Jxpf /tmp/s6-overlay-symlinks-noarch.tar.xz
+RUN tar -C /root-out -Jxpf /tmp/s6-overlay-symlinks-noarch.tar.xz && unlink /root-out/usr/bin/with-contenv
 ADD https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-symlinks-arch.tar.xz /tmp
-RUN tar -C / -Jxpf /tmp/s6-overlay-symlinks-arch.tar.xz
+RUN tar -C /root-out -Jxpf /tmp/s6-overlay-symlinks-arch.tar.xz
 
 # Runtime stage
+FROM scratch
+COPY --from=rootfs-stage /root-out/ /
 ARG BUILD_DATE
 ARG VERSION
 ARG MODS_VERSION="v3"