CI/Docker: Add install-nuclei.sh script and improve inline comments

Signed-off-by: Michael Mayer <michael@photoprism.app>

scripts/dist/cleanup.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-# abort if not executed as root
+# Abort if not executed as root.
 if [[ $(id -u) != "0" ]]; then
   echo "Usage: run ${0##*/} as root" 1>&2
   exit 1

scripts/dist/create-users.sh

@@ -2,7 +2,7 @@
 
 PATH="/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/scripts:$PATH"
 
-# abort if not executed as root
+# Abort if not executed as root.
 if [ $(id -u) != "0" ]; then
   echo "Usage: run ${0##*/} as root" 1>&2
   exit 1

scripts/dist/dist-upgrade.sh

@@ -2,7 +2,7 @@
 
 PATH="/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/scripts:$PATH"
 
-# abort if not executed as root
+# Abort if not executed as root.
 if [[ $(id -u) != "0" ]]; then
   echo "Usage: run ${0##*/} as root" 1>&2
   exit 1

scripts/dist/entrypoint-init.sh

@@ -3,7 +3,7 @@
 # INITIALIZES CONTAINER PACKAGES AND PERMISSIONS
 export PATH="/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/scripts"
 
-# abort if not executed as root
+# Abort if not executed as root.
 if [[ $(id -u) != "0" ]]; then
   echo "Usage: run ${0##*/} as root" 1>&2
   exit 1

scripts/dist/install-admin-tools.sh

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 
-# Installs Admin Tools on Linux
+# This installs the "duf" and "muffet" admin tools on Linux.
 # bash <(curl -s https://raw.githubusercontent.com/photoprism/photoprism/develop/scripts/dist/install-admin-tools.sh)
 
-# abort if not executed as root
+# Abort if not executed as root..
 if [[ $(id -u) != "0" ]]; then
   echo "Usage: run ${0##*/} as root" 1>&2
   exit 1
@@ -11,6 +11,7 @@ fi
 
 set -eux;
 
+# Is Go installed?
 if ! command -v go &> /dev/null
 then
     echo "Go must be installed to run this."
@@ -23,7 +24,5 @@ GOBIN="/usr/local/bin" go install github.com/muesli/duf@latest
 echo "Installing muffet, a fast website link checker..."
 GOBIN="/usr/local/bin" go install github.com/raviqqe/muffet@latest
 
-echo "Installing nuclei, a fast and customizable vulnerability scanner..."
-GOBIN="/usr/local/bin" go install github.com/projectdiscovery/nuclei/v2/cmd/nuclei@latest
-
+# Create a symbolic link for "duf" so that it is used instead of the original "df".
 ln -sf /usr/local/bin/duf /usr/local/bin/df

scripts/dist/install-caddy.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-# Installs Caddy on Linux
+# This installs the Caddy web server on Linux.
 # bash <(curl -s https://raw.githubusercontent.com/photoprism/photoprism/develop/scripts/dist/install-caddy.sh)
 
 set -e

scripts/dist/install-chrome.sh

@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 
-# Installs Google Chrome on Linux
+# This installs Google Chrome on Linux.
 # bash <(curl -s https://raw.githubusercontent.com/photoprism/photoprism/develop/scripts/dist/install-chrome.sh)
 
 PATH="/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/scripts:$PATH"
 
-# abort if not executed as root
+# Abort if not executed as root.
 if [[ $(id -u) != "0" ]]; then
   echo "Usage: run ${0##*/} as root" 1>&2
   exit 1

scripts/dist/install-darktable.sh

@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 
-# Installs Darktable on Linux
+# This installs Darktable on Linux.
 # bash <(curl -s https://raw.githubusercontent.com/photoprism/photoprism/develop/scripts/dist/install-darktable.sh)
 
 PATH="/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/scripts:$PATH"
 
-# abort if not executed as root
+# Abort if not executed as root.
 if [[ $(id -u) != "0" ]]; then
   echo "Usage: run ${0##*/} as root" 1>&2
   exit 1

scripts/dist/install-davfs.sh

@@ -1,8 +1,10 @@
 #!/usr/bin/env bash
 
+# This installs the DavFS filesystem driver on Linux.
+
 PATH="/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/scripts:$PATH"
 
-# abort if not executed as root
+# Abort if not executed as root.
 if [[ $(id -u) != "0" ]]; then
   echo "Usage: run ${0##*/} as root" 1>&2
   exit 1

scripts/dist/install-docker.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-# Installs Docker on Ubuntu Linux
+# This installs Docker on Ubuntu Linux
 # bash <(curl -s https://raw.githubusercontent.com/photoprism/photoprism/develop/scripts/dist/install-docker.sh)
 
 echo "Installing Docker..."

scripts/dist/install-go-tools.sh

@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 
-# Installs Go tools on Linux
+# This installs Go tools on Linux.
 # bash <(curl -s https://raw.githubusercontent.com/photoprism/photoprism/develop/scripts/dist/install-go-tools.sh)
 
 PATH="/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/scripts:/usr/local/go/bin:/go/bin:$PATH"
 
-# abort if not executed as root
+# Abort if not executed as root.
 if [[ $(id -u) != "0" ]]; then
   echo "Usage: run ${0##*/} as root" 1>&2
   exit 1

scripts/dist/install-go.sh

@@ -1,13 +1,13 @@
 #!/usr/bin/env bash
 
-# Installs latest Go on Linux
+# This installs latest Go on Linux.
 # bash <(curl -s https://raw.githubusercontent.com/photoprism/photoprism/develop/scripts/dist/install-go.sh)
 
 PATH="/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/scripts:$PATH"
 
 DESTDIR=$(realpath "${1:-/usr/local}")
 
-# Abort if not executed as root.
+# Abort if not executed as root..
 if [[ $(id -u) != "0" ]]; then
   echo "Usage: run ${0##*/} as root" 1>&2
   exit 1

scripts/dist/install-gpu.sh

@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 
-# Installs GPU drivers on Linux
+# This installs GPU drivers on Linux.
 # bash <(curl -s https://raw.githubusercontent.com/photoprism/photoprism/develop/scripts/dist/install-gpu.sh)
 
 PATH="/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/scripts:$PATH"
 
-# abort if not executed as root
+# Abort if not executed as root.
 if [[ $(id -u) != "0" ]]; then
   echo "Error: Run ${0##*/} as root" 1>&2
   exit 1

scripts/dist/install-https.sh

@@ -5,7 +5,7 @@
 
 PATH="/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/scripts:$PATH"
 
-# Abort if not executed as root.
+# Abort if not executed as root..
 if [[ $(id -u) != "0" ]]; then
   echo "Usage: run ${0##*/} as root" 1>&2
   exit 1

scripts/dist/install-libheif.sh

@@ -9,7 +9,7 @@ DESTARCH=${DESTARCH:-$SYSTEM_ARCH}
 
 . /etc/os-release
 
-# abort if not executed as root
+# Abort if not executed as root.
 if [[ $(id -u) != "0" ]] && [[ $DESTDIR == "/usr" || $DESTDIR == "/usr/local" ]]; then
   echo "Error: Run ${0##*/} as root to install in a system directory!" 1>&2
   exit 1

scripts/dist/install-mariadb.sh

@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 
-# Installs MariaDB on Linux
+# This installs MariaDB on Linux.
 # bash <(curl -s https://raw.githubusercontent.com/photoprism/photoprism/develop/scripts/dist/install-mariadb.sh)
 
 PATH="/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/scripts:$PATH"
 
-# abort if not executed as root
+# Abort if not executed as root.
 if [[ $(id -u) != "0" ]]; then
   echo "Usage: run ${0##*/} as root" 1>&2
   exit 1

scripts/dist/install-nodejs.sh

@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 
-# Installs NodeJS, NPM and TestCafe on Linux
+# This installs NodeJS, NPM and TestCafe on Linux.
 # bash <(curl -s https://raw.githubusercontent.com/photoprism/photoprism/develop/scripts/dist/install-nodejs.sh)
 
 PATH="/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/scripts:$PATH"
 
-# abort if not executed as root
+# Abort if not executed as root.
 if [[ $(id -u) != "0" ]]; then
   echo "Usage: run ${0##*/} as root" 1>&2
   exit 1

scripts/dist/install-nuclei.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+# This installs the Nuclei Vulnerability Scanner on Linux.
+# bash <(curl -s https://raw.githubusercontent.com/photoprism/photoprism/develop/scripts/dist/install-nuclei.sh)
+
+# Abort if not executed as root..
+if [[ $(id -u) != "0" ]]; then
+  echo "Usage: run ${0##*/} as root" 1>&2
+  exit 1
+fi
+
+set -eux;
+
+# Is Go installed?
+if ! command -v go &> /dev/null
+then
+    echo "Go must be installed to run this."
+    exit 1
+fi
+
+# Install Nuclei via go install.
+echo "Installing nuclei, a fast and customizable vulnerability scanner..."
+GOBIN="/usr/local/bin" go install github.com/projectdiscovery/nuclei/v2/cmd/nuclei@latest

scripts/dist/install-tensorflow.sh

@@ -18,7 +18,7 @@ fi
 
 TMPDIR=${TMPDIR:-/tmp}
 
-# abort if not executed as root
+# Abort if not executed as root.
 if [[ $(id -u) != "0" ]] && [[ $DESTDIR == "/usr" || $DESTDIR == "/usr/local" ]]; then
   echo "Error: Run ${0##*/} as root to install in a system directory!" 1>&2
   exit 1