Docker environment variables

[modem7]

Heya,

Great project you have!

I understand that you're not so hot on Docker stuff currently, and there's quite a few variables that aren't available.

Would something like this be suitable for starters (I'm sure others could improve on it)?

#!/bin/bash

set -e

# Website
# https://github.com/szabodanika/microbin

# Version variables
MICROBINVER=$(microbin --version)

# Software versions
echo $MICROBINVER

# Declare Variables
PORT="${PORT:-"8080"}"
THREADS="${THREADS:-"1"}"

# Declare the string array
arrVar=()

# Add to string array if variable is true
if [ "$EDITABLE" == "true" ]
  then
    arrVar+=("--editable")
fi

if [ "$HIDE_FOOTER" == "true" ]
  then
    arrVar+=("--hide-footer")
fi

if [ "$HIGHLIGHTSYNTAX" == "true" ]
  then
    arrVar+=("--highlightsyntax")
fi

if [ "$PRIVATE" == "true" ]
  then
    arrVar+=("--private")
fi

if [ "$HIDE_FOOTER" == "true" ]
  then
    arrVar+=("--hide-footer")
fi

if [ "$HIDE_HEADER" == "true" ]
  then
    arrVar+=("--hide-header")
fi

if [ "$HIDE_LOGO" == "true" ]
  then
    arrVar+=("--hide-logo")
fi

if [ "$NO_LISTING" == "true" ]
  then
    arrVar+=("--no-listing")
fi

if [ "$PURE_HTML" == "true" ]
  then
    arrVar+=("--pure-html")
fi

if [ "$READ_ONLY" == "true" ]
  then
    arrVar+=("--readonly")
fi

if [ "$WIDE" == "true" ]
  then
    arrVar+=("--wide")
fi

#########################
#User Editable Variables#
#########################

if [ -v AUTH_USERNAME ]
  then
    arrVar+=("--auth-username $AUTH_USERNAME")
fi

if [ -v AUTH_PASSWORD ]
  then
    arrVar+=("--auth-password $AUTH_PASSWORD")
fi

if [ -v FOOTER_TEXT ]
  then
    arrVar+=("--footer_text $FOOTER_TEXT")
fi

if [ -v BIND_ADDR ]
  then
    arrVar+=("--bind $BIND_ADDR")
fi

# Save and define variables
printf -v str ' %s' "${arrVar[@]}"  # save to variable str without printing
MICROBIN_VARS="${str:1}"  # to remove the leading space 

# Show defined variables
echo "Microbin starting with following variables: microbin --port $PORT --threads $THREADS $MICROBIN_VARS"

# Start Microbin
microbin --port $PORT --threads $THREADS $MICROBIN_VARS

This would give you the following variables:	Variable	Value
EDITABLE	true false
EDITABLE	true false
EDITABLE	true false
EDITABLE	true false
EDITABLE	true false
EDITABLE	true false
EDITABLE	true false
EDITABLE	true false
EDITABLE	true false
EDITABLE	true false
EDITABLE	true false

EDITABLE="${EDITABLE:-}"

HIDE_FOOTER="${HIDE_FOOTER:-}"

HIGHLIGHTSYNTAX="${HIGHLIGHTSYNTAX:-}"

PRIVATE="${PRIVATE:-}"

HIDE_FOOTER="${HIDE_FOOTER:-}"

HIDE_HEADER="${HIDE_HEADER:-}"

HIDE_LOGO="${HIDE_LOGO:-}"

NO_LISTING="${NO_LISTING:-}"

PURE_HTML="${PURE_HTML:-}"

READ_ONLY="${READ_ONLY:-}"

WIDE="${WIDE:-}"

AUTH_USERNAME="${AUTH_USERNAME-}"

AUTH_PASSWORD="${AUTH_PASSWORD-""}"

FOOTER_TEXT="${FOOTER_TEXT-}"

BIND_ADDR="${BIND_ADDR-""}"

PORT="${PORT:-"8080"}" THREADS="${THREADS:-"1"}"

[modem7]

Accidental double post of https://github.com/szabodanika/microbin/issues/66