use url-parser and fetch wait-for script from remote

Dockerfile.amd64

@@ -14,7 +14,11 @@ RUN addgroup -g 101 -S app && \
     apk --update add --virtual .build-deps tar curl && \
     apk --update add openssl postgresql-libs ca-certificates && \
     curl -SsL -o /usr/local/bin/gomplate https://github.com/hairyhenderson/gomplate/releases/download/v3.5.0/gomplate_linux-amd64-slim && \
+    curl -SsL -o /usr/local/bin/url-parser https://github.com/xoxys/url-parser/releases/download/v0.1.0/url-parser-0.1.0-linux-amd64 && \
+    curl -SsL -o /usr/local/bin/wait-for https://raw.githubusercontent.com/xoxys/wait-for/master/wait-for && \
     chmod 755 /usr/local/bin/gomplate && \
+    chmod 755 /usr/local/bin/url-parser && \
+    chmod 755 /usr/local/bin/wait-for && \
     mkdir -p /app/web-vault /app/data && \
     curl -SsL ${VAULT_TARBALL} | tar xz -C /app/web-vault && \
     apk del .build-deps && \

overlay/usr/local/bin/entrypoint

@@ -1,13 +1,16 @@
 #!/usr/bin/env sh
 
-set -eo pipefail
+set -eo
 
 /usr/local/bin/gomplate -V -o /app/.env -f /etc/templates/env.tmpl
 
-if [ ! -z "$BITWARDENRS_WAIT_FOR_HOST" ] && [ ! -z "$BITWARDENRS_WAIT_FOR_PORT" ]
+if [ "$BITWARDENRS_WAITFOR_ENABLED" = true ]
 then
+  WAITFOR_HOST=$(url-parse host --url "$BITWARDENRS_DATABASE_URL")
+  WAITFOR_PORT=$(url-parse port --url "$BITWARDENRS_DATABASE_URL")
+
   printf "Wait for database server ...\n"
-  /usr/local/bin/wait-for
+  /usr/local/bin/wait-for "${WAITFOR_HOST}":"${WAITFOR_PORT:-5432}"
 fi
 
 printf "Start Bitwarden Server ...\n"

overlay/usr/local/bin/wait-for

@@ -1,79 +0,0 @@
-#!/usr/bin/env sh
-
-BITWARDENRS_WAIT_FOR_TIMEOUT=15
-QUIET=0
-
-echoerr() {
-  if [ "$QUIET" -ne 1 ]; then printf "%s\n" "$*" 1>&2; fi
-}
-
-usage() {
-  exitcode="$1"
-  cat << USAGE >&2
-Usage:
-  $cmdname host:port [-t timeout] [-- command args]
-  -q | --quiet                        Do not output any status messages
-  -t TIMEOUT | --timeout=timeout      Timeout in seconds, zero for no timeout
-  -- COMMAND ARGS                     Execute command with args after the test finishes
-USAGE
-  exit "$exitcode"
-}
-
-wait_for() {
-  for i in `seq $BITWARDENRS_WAIT_FOR_TIMEOUT` ; do
-    nc -z "$BITWARDENRS_WAIT_FOR_HOST" "$BITWARDENRS_WAIT_FOR_PORT" > /dev/null 2>&1
-
-    result=$?
-    if [ $result -eq 0 ] ; then
-      if [ $# -gt 0 ] ; then
-        exec "$@"
-      fi
-      exit 0
-    fi
-    sleep 1
-  done
-  echo "Operation timed out" >&2
-  exit 1
-}
-
-while [ $# -gt 0 ]
-do
-  case "$1" in
-    *:* )
-    HOST=$(printf "%s\n" "$1"| cut -d : -f 1)
-    PORT=$(printf "%s\n" "$1"| cut -d : -f 2)
-    shift 1
-    ;;
-    -q | --quiet)
-    QUIET=1
-    shift 1
-    ;;
-    -t)
-    TIMEOUT="$2"
-    if [ "$TIMEOUT" = "" ]; then break; fi
-    shift 2
-    ;;
-    --timeout=*)
-    TIMEOUT="${1#*=}"
-    shift 1
-    ;;
-    --)
-    shift
-    break
-    ;;
-    --help)
-    usage 0
-    ;;
-    *)
-    echoerr "Unknown argument: $1"
-    usage 1
-    ;;
-  esac
-done
-
-if [ "$HOST" = "" -o "$PORT" = "" ]; then
-  echoerr "Error: you need to provide a host and port to test."
-  usage 2
-fi
-
-wait_for "$@"