rootless implementation (#53)

* rootless implementation

Co-authored-by: madelen-axis <madelen-axis@users.noreply.github.com>

.github/workflows/cd.yml

@@ -8,6 +8,7 @@ on:
   push:
     branches:
       - 'main'
+      - 'rootless-preview'
     tags:
       # semver, e.g. 1.2.0 (does not match 0.1.2)
       - '[1-9]+.[0-9]+.[0-9]+'
@@ -22,6 +23,7 @@ on:
   pull_request:
     branches:
       - 'main'
+      - 'rootless-preview'
 
 jobs:
   # Builds docker ACAP using the build.sh script, then signs the eap-file in

Dockerfile

@@ -14,14 +14,9 @@ ARG ACAP3_SDK_VERSION=3.5
 ARG ACAP3_UBUNTU_VERSION=20.04
 ARG ACAP3_SDK=acap-sdk
 
-FROM ${REPO}/${NATIVE_SDK}:${VERSION}-${ACAPARCH}-ubuntu${UBUNTU_VERSION} as build_image
-
 FROM ${REPO}/${ACAP3_SDK}:${ACAP3_SDK_VERSION}-${ACAPARCH}-ubuntu${ACAP3_UBUNTU_VERSION} as acap-sdk
 
-FROM build_image AS ps
-ARG PROCPS_VERSION=v3.3.17
-ARG BUILD_DIR=/build
-ARG EXPORT_DIR=/export
+FROM ${REPO}/${NATIVE_SDK}:${VERSION}-${ACAPARCH}-ubuntu${UBUNTU_VERSION} as build_image
 
 RUN <<EOF
     apt-get update
@@ -30,11 +25,46 @@ RUN <<EOF
         autopoint \
         gettext \
         git \
-        libtool 
+        libtool \
+        bison
     ln -s /usr/bin/libtoolize /usr/bin/libtool
+    apt-get clean
+    rm -rf /var/lib/apt/lists/*
+EOF
+
+FROM build_image AS nsenter
 
+ARG NSENTER_VERSION=v2.39.1
+ARG BUILD_DIR=/build
+ARG EXPORT_DIR=/export
+
+WORKDIR $BUILD_DIR
+RUN git clone -b $NSENTER_VERSION 'https://github.com/util-linux/util-linux.git'
+
+ARG BUILD_CACHE=build.cache
+RUN echo ac_cv_func_realloc_0_nonnull=yes >$BUILD_CACHE \
+    && echo ac_cv_func_malloc_0_nonnull=yes >>$BUILD_CACHE
+RUN <<EOF
+    cd util-linux
+    . /opt/axis/acapsdk/environment-setup*
+    ./autogen.sh
+    ./configure --host="${TARGET_PREFIX%*-}" \
+                --disable-shared \
+                --without-ncurses  \
+                --cache-file="$BUILD_CACHE"
+    make nsenter
+    $STRIP nsenter
 EOF
 
+WORKDIR $EXPORT_DIR
+RUN cp $BUILD_DIR/util-linux/nsenter nsenter
+
+FROM build_image AS ps
+
+ARG PROCPS_VERSION=v3.3.17
+ARG BUILD_DIR=/build
+ARG EXPORT_DIR=/export
+
 WORKDIR $BUILD_DIR
 RUN git clone --depth 1 -b $PROCPS_VERSION 'https://gitlab.com/procps-ng/procps' .
 
@@ -60,6 +90,8 @@ FROM build_image as build
 ARG DOCKER_VERSION
 ARG DOCKER_COMPOSE_VERSION
 ARG ACAPARCH
+ARG SLIRP4NETNS_VERSION=1.2.0
+ARG ROOTLESS_EXTRAS_VERSION=${DOCKER_VERSION}
 
 # Copy over axparameter from the acap-sdk
 COPY --from=acap-sdk /opt/axis/acapsdk/sysroots/${ACAPARCH}/usr/include/axsdk/ax_parameter /opt/axis/acapsdk/sysroots/${ACAPARCH}/usr/include/axsdk
@@ -70,8 +102,29 @@ COPY --from=acap-sdk /opt/axis/acapsdk/sysroots/${ACAPARCH}/usr/lib/pkgconfig/ax
 
 COPY app /opt/app
 COPY --from=ps /export/ps /opt/app
+COPY --from=nsenter /export/nsenter /opt/app
+
+COPY ./binaries/${ACAPARCH}/* /opt/app
 
-# Get docker* binaries and scripts
+# Temp fix to get binary onto aarch64 master fw
+COPY ./binaries/systemd-user-runtime-dir /opt/app
+COPY ./binaries/*.service /opt/app
+COPY ./binaries/handle_directories.sh /opt/app
+
+WORKDIR /opt/app
+
+# Download and extract slirp4netns
+RUN <<EOF
+    if [ "$ACAPARCH" = "armv7hf" ]; then
+        export SLIRP4NETNS_ARCH="armv7l";
+    elif [ "$ACAPARCH" = "aarch64" ]; then
+        export SLIRP4NETNS_ARCH="aarch64";
+    fi;
+    curl -Lo slirp4netns "https://github.com/rootless-containers/slirp4netns/releases/download/v${SLIRP4NETNS_VERSION}/slirp4netns-${SLIRP4NETNS_ARCH}";
+    chmod +x slirp4netns
+EOF
+
+# Download and extract docker scripts and docker-rootless-extras scripts
 RUN <<EOF
     if [ "$ACAPARCH" = "armv7hf" ]; then
         export DOCKER_ARCH="armhf";
@@ -86,10 +139,11 @@ RUN <<EOF
     tar -xz -f docker_binaries.tgz --strip-components=1 docker/docker-init ;
     tar -xz -f docker_binaries.tgz --strip-components=1 docker/docker-proxy ;
     curl -Lo docker-compose "https://github.com/docker/compose/releases/download/${DOCKER_COMPOSE_VERSION}/docker-compose-linux-${DOCKER_COMPOSE_ARCH}" ;
-    chmod +x docker-compose
+    chmod +x docker-compose ;
+    curl -Lo docker-rootless-extras.tgz "https://download.docker.com/linux/static/stable/${DOCKER_ARCH}/docker-rootless-extras-${ROOTLESS_EXTRAS_VERSION}.tgz" ;
+    tar -xz -f docker-rootless-extras.tgz --strip-components=1 ;
 EOF
 
-WORKDIR /opt/app
 RUN <<EOF
     . /opt/axis/acapsdk/environment-setup*
     acap-build . \
@@ -99,7 +153,17 @@ RUN <<EOF
         -a docker-init \
         -a docker-proxy \
         -a empty_daemon.json \
-        -a ps
+        -a ps \
+        -a slirp4netns \
+        -a rootlesskit \
+        -a rootlesskit-docker-proxy \
+        -a nsenter \
+        -a newgidmap \
+        -a newuidmap \
+        -a systemd-user-runtime-dir \
+        -a acap-user-runtime-dir@.service \
+        -a acap-user@.service \
+        -a handle_directories.sh
 EOF
 
 ENTRYPOINT [ "/opt/axis/acapsdk/sysroots/x86_64-pokysdk-linux/usr/bin/eap-install.sh" ]