Install standard tooling in workspace dev containers (#271)

* Provide a method for installing standard tooling in patched images

To support providing standard tooling across all images used in
devfiles, this commit attempts to add a distro-agnostic script for
installing common packages into development images.

Currently, common commandline editors vim and nano are installed.

Signed-off-by: Angel Misevski <amisevsk@redhat.com>

* Print list of images patched with arbitrary UID support

Print a list of the images that were created upon completion of the
build_images.sh script, to aid testing.

Signed-off-by: Angel Misevski <amisevsk@redhat.com>

* Rename tooling install script for arb uid patched images

Rename 'install-tooling.sh' to 'install-editor-tooling.sh' to better
represent its purpose.

Signed-off-by: Angel Misevski <amisevsk@redhat.com>

arbitrary-users-patch/Dockerfile

@@ -5,6 +5,10 @@ USER 0
 COPY --chown=0:0 entrypoint.sh /
 RUN mkdir -p /home/user && chgrp -R 0 /home && chmod -R g=u /etc/passwd /etc/group /home && chmod +x /entrypoint.sh
 
+# Install common terminal editors in container to aid development process
+COPY install-editor-tooling.sh /tmp
+RUN /tmp/install-editor-tooling.sh && rm -f /tmp/install-editor-tooling.sh
+
 USER 10001
 ENV HOME=/home/user
 WORKDIR /projects

arbitrary-users-patch/build_images.sh

@@ -27,6 +27,7 @@ if [ "$1" == "--push" ]; then
   PUSH_IMAGES=true
 fi
 
+BUILT_IMAGES=""
 while read -r line; do
   base_image_name=$(echo "$line" | tr -s ' ' | cut -f 1 -d ' ')
   base_image=$(echo "$line" | tr -s ' ' | cut -f 2 -d ' ')
@@ -36,4 +37,8 @@ while read -r line; do
     echo "Pushing ${NAME_FORMAT}/${base_image_name}:${TAG}" to remote registry
     docker push "${NAME_FORMAT}/${base_image_name}:${TAG}" | cat
   fi
+  BUILT_IMAGES="${BUILT_IMAGES}    ${NAME_FORMAT}/${base_image_name}:${TAG}\n"
 done < "${SCRIPT_DIR}"/base_images
+
+echo "Built images:"
+echo -e "$BUILT_IMAGES"

arbitrary-users-patch/entrypoint.sh

 #!/bin/bash
+#
+# Copyright (c) 2019-2020 Red Hat, Inc.
+# This program and the accompanying materials are made
+# available under the terms of the Eclipse Public License 2.0
+# which is available at https://www.eclipse.org/legal/epl-2.0/
+#
+# SPDX-License-Identifier: EPL-2.0
+#
 
 # Ensure $HOME exists when starting
 if [ ! -d "${HOME}" ]; then

arbitrary-users-patch/install-editor-tooling.sh

+#!/bin/bash
+#
+# Copyright (c) 2020 Red Hat, Inc.
+# This program and the accompanying materials are made
+# available under the terms of the Eclipse Public License 2.0
+# which is available at https://www.eclipse.org/legal/epl-2.0/
+#
+# SPDX-License-Identifier: EPL-2.0
+#
+
+set -e
+
+TOOLING=(vim nano)
+
+if command -v dnf 2> /dev/null; then
+  dnf install -y "${TOOLING[@]}"
+  dnf -y clean all
+elif command -v yum 2> /dev/null; then
+  yum install -y "${TOOLING[@]}"
+  yum -y clean all
+elif command -v apt-get 2> /dev/null; then
+  apt-get update
+  apt-get install -y "${TOOLING[@]}"
+  apt-get clean
+  rm -rf /var/lib/apt/lists/*
+elif command -v apk 2> /dev/null; then
+  apk add --no-cache "${TOOLING[@]}"
+fi