add plantUML sidecar (#863)

* add plantUML sidecar

Signed-off-by: Esteban Mañaricua <emanaricua@gmail.com>

* remove unused debs

Signed-off-by: Esteban Mañaricua <emanaricua@gmail.com>

* fix dates

Signed-off-by: Esteban Mañaricua <emanaricua@gmail.com>

sidecars/plantuml/Dockerfile

@@ -0,0 +1,30 @@
+# Copyright (c) 2021 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
+#
+# Contributors:
+#   Red Hat, Inc. - initial API and implementation
+FROM plantuml/plantuml-server
+
+ENV TMPDIR=/tmp
+ENV HOME=/home/theia
+
+USER root
+
+RUN mkdir /projects && mkdir -p /home/theia && \
+    # Change permissions to let any arbitrary user
+    for f in "${HOME}" "/etc/passwd" "/projects"; do \
+      echo "Changing permissions on ${f}" && chgrp -R 0 ${f} && \
+      chmod -R g+rwX ${f}; \
+    done && \
+    chgrp -R 0 /run && chmod -R g+rwX /run && \
+    chgrp -R 0 /var/lib/jetty && chmod -R g+rwX /var/lib/jetty && \
+    apt update && apt install -y graphviz
+
+ADD etc/entrypoint.sh /entrypoint.sh
+ENTRYPOINT [ "/entrypoint.sh" ]
+
+CMD ${PLUGIN_REMOTE_ENDPOINT_EXECUTABLE}

sidecars/plantuml/PLATFORMS

@@ -0,0 +1 @@
+linux/amd64

sidecars/plantuml/etc/entrypoint.sh

@@ -0,0 +1,31 @@
+#!/bin/sh
+#
+# Copyright (c) 2018-2021 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
+#
+# Contributors:
+#   Red Hat, Inc. - initial API and implementation
+#
+
+set -e
+set -x
+
+USER_ID=$(id -u)
+export USER_ID
+GROUP_ID=$(id -g)
+export GROUP_ID
+
+if ! whoami >/dev/null 2>&1; then
+    echo "${USER_NAME:-user}:x:${USER_ID}:0:${USER_NAME:-user} user:${HOME}:/bin/sh" >> /etc/passwd
+fi
+
+# Grant access to projects volume in case of non root user with sudo rights
+if [ "${USER_ID}" -ne 0 ] && command -v sudo >/dev/null 2>&1 && sudo -n true > /dev/null 2>&1; then
+    sudo chown "${USER_ID}:${GROUP_ID}" /projects
+fi
+
+exec "$@"