Remove dockerize and entrypoint-script parsing

Currently the entrypoint script parses the database URL configuration
string in order to extract the remote location and waits for the
database to be available.

This patch removes this logic and also removes `dockerize`, which was
used to wait for the connection. However, this change should not be
merged without the changes introduced in a commit on the main
applicaiton, that implements an own connection retry mechanism.

Reference:
https://github.com/hedgedoc/hedgedoc/pull/1228Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>

alpine/Dockerfile

@@ -3,13 +3,6 @@ FROM node:16.9.0-alpine@sha256:697313d55634a94b36cc5cf75a687b210c7e4a8e433e64d80
 FROM base AS basebuilder
 RUN apk update
 
-FROM basebuilder AS dockerize
-# Download and extract dockerize, used in resources/docker-entrypoint.sh
-ENV DOCKERIZE_VERSION=v0.6.1
-RUN wget https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz
-RUN tar -xzvf dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz
-RUN rm dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz
-
 
 FROM basebuilder AS builder
 # Build arguments to change source url, branch or tag
@@ -40,7 +33,6 @@ FROM base
 ARG UID=10000
 ENV NODE_ENV=production
 
-COPY --from=dockerize dockerize /usr/local/bin/
 COPY --chown=$UID --from=builder /hedgedoc /hedgedoc
 
 # Add configuraton files

debian/Dockerfile

@@ -3,14 +3,6 @@ FROM node:16.9.0-slim@sha256:fca208cb6a90179412cc78ac590a81c3b802b2d3a66b202e315
 FROM base AS basebuilder
 RUN apt-get update
 
-FROM basebuilder AS dockerize
-# Download and extract dockerize, used in resources/docker-entrypoint.sh
-ENV DOCKERIZE_VERSION=v0.6.1
-RUN apt-get install --no-install-recommends -y ca-certificates wget
-RUN wget https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz
-RUN tar -xzvf dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz
-RUN rm dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz
-
 
 FROM basebuilder AS builder
 # Build arguments to change source url, branch or tag
@@ -46,7 +38,6 @@ RUN apt-get update && \
     apt-get install --no-install-recommends -y fonts-noto gosu && \
     rm -r /var/lib/apt/lists/*
 
-COPY --from=dockerize dockerize /usr/local/bin/
 COPY --chown=$UID --from=builder /hedgedoc /hedgedoc
 
 # Add configuraton files

resources/docker-entrypoint.sh

@@ -4,32 +4,10 @@
 UID="$(id -u)"
 [ "$UID" -eq 0 ] && GOSU="gosu hedgedoc" || GOSU=""
 
-if [ "$HMD_DB_URL" != "" ] && [ "$CMD_DB_URL" = "" ]; then
-    CMD_DB_URL="$HMD_DB_URL"
-fi
-
 if [ "$HMD_IMAGE_UPLOAD_TYPE" != "" ] && [ "$CMD_IMAGE_UPLOAD_TYPE" = "" ]; then
     CMD_IMAGE_UPLOAD_TYPE="$HMD_IMAGE_UPLOAD_TYPE"
 fi
 
-DOCKER_SECRET_DB_URL_FILE_PATH="/run/secrets/dbURL"
-
-if [ -f "$DOCKER_SECRET_DB_URL_FILE_PATH" ]; then
-    CMD_DB_URL="$(cat $DOCKER_SECRET_DB_URL_FILE_PATH)"
-fi
-
-if [ "$CMD_DB_URL" = "" ]; then
-    CMD_DB_URL="postgres://hedgedoc:password@database:5432/hedgedoc"
-fi
-
-export CMD_DB_URL
-
-DB_SOCKET=$(echo ${CMD_DB_URL} | sed -e 's/.*:\/\//\/\//' -e 's/.*\/\/[^@]*@//' -e 's/\/.*$//')
-
-if [ "$DB_SOCKET" != "" ]; then
-    dockerize -wait "tcp://${DB_SOCKET}" -timeout 30s
-fi
-
 # Print warning if local data storage is used but no volume is mounted
 [ "$CMD_IMAGE_UPLOAD_TYPE" = "filesystem" ] && { mountpoint -q ./public/uploads || {
     echo "