Use wait-for-it script instead of postgresql-client and mysql-client

core/Dockerfile

@@ -23,6 +23,9 @@ RUN --mount=type=cache,target=/root/.cache \
 
 #Add startup script to container
 COPY docker-entrypoint.sh /usr/local/bin/
+# Add wait-for-it script (MIT license)
+RUN wget -O /usr/local/bin/wait-for-it https://raw.githubusercontent.com/vishnubob/wait-for-it/81b1373f17855a4dc21156cfe1694c31d7d1792e/wait-for-it.sh \
+	&& chmod +x /usr/local/bin/wait-for-it
 
 # Change the working directory.
 WORKDIR /opt/mailman

core/docker-entrypoint.sh

@@ -1,26 +1,16 @@
 #! /bin/bash
 set -e
 
-function wait_for_postgres () {
-	# Check if the postgres database is up and accepting connections before
-	# moving forward.
-	# TODO: Use python3's psycopg2 module to do this in python3 instead of
-	# installing postgres-client in the image.
-	until psql -P pager=off $DATABASE_URL -c '\l'; do
-		>&2 echo "Postgres is unavailable - sleeping"
-		sleep 1
-	done
-	>&2 echo "Postgres is up - continuing"
-}
 
-function wait_for_mysql () {
-	# Check if MySQL is up and accepting connections.
-	readarray -d' ' -t ENDPOINT <<< $(python3 -c "from urllib.parse import urlparse; o = urlparse('$DATABASE_URL'); print('%s %s' % (o.hostname, o.port if o.port else '3306'));")
-	until mysqladmin ping --host ${ENDPOINT[0]} --port ${ENDPOINT[1]} --silent; do
-		>&2 echo "MySQL is unavailable - sleeping"
-		sleep 1
-	done
-	>&2 echo "MySQL is up - continuing"
+function wait_for_db () {
+	# Check if the database is up and accepting connections before moving forward.
+	echo "Waiting for $DATABASE_TYPE"
+	declare -A DEFAULT_PORT=( ["postgres"]="5432" ["mysql"]="3306")
+	python3 -c "from urllib.parse import urlparse; o = urlparse('$DATABASE_URL'); print('%s %s' % (o.hostname, o.port if o.port else '${DEFAULT_PORT[$DATABASE_TYPE]}'));" | {
+		read HOST PORT
+		wait-for-it --timeout=60 "$HOST:$PORT" || exit 1
+	}
+	echo "$DATABASE_TYPE is up - continuing"
 }
 
 # Empty the config file.
@@ -92,27 +82,13 @@ EOF
 
 # Check if $DATABASE_URL is defined, if not, use a standard sqlite database.
 #
-# If the $DATABASE_URL is defined and is postgres, check if it is available
-# yet. Do not start the container before the postgresql boots up.
-#
-# TODO: If the $DATABASE_URL is defined and is mysql, check if the database is
-# available before the container boots up.
-#
-# TODO: Check the database type and detect if it is up based on that. For now,
-# assume that postgres is being used if DATABASE_URL is defined.
+# If the $DATABASE_URL is defined, check if the database is available before the
+# container boots up.
 if [[ ! -v DATABASE_URL ]]; then
 	echo "DATABASE_URL is not defined. Using sqlite database..."
 else
 	setup_database
-fi
-
-
-if [[ "$DATABASE_TYPE" = 'postgres' ]]
-then
-	wait_for_postgres
-elif [[ "$DATABASE_TYPE" = 'mysql' ]]
-then
-	wait_for_mysql
+	wait_for_db
 fi
 
 # Generate a basic mailman.cfg.

postorius/Dockerfile

@@ -9,7 +9,7 @@ RUN --mount=type=cache,target=/root/.cache \
 	&& apk add --no-cache --virtual .build-deps gcc libc-dev linux-headers \
 		postgresql-dev mariadb-dev mariadb-connector-c python3-dev libffi-dev openldap-dev cargo rust \
 	&& apk add --no-cache --virtual .mailman-rundeps bash sassc tzdata \
-		postgresql-client mysql-client py3-mysqlclient curl mailcap gettext \
+		libpq py3-mysqlclient curl mailcap gettext \
 		python3 py3-pip libffi libuuid pcre-dev py-cryptography \
 	&& python3 -m pip install -U 'Django<4.2' pip setuptools wheel \
 	&& python3 -m pip install postorius==1.3.7 \
@@ -28,8 +28,10 @@ RUN --mount=type=cache,target=/root/.cache \
 COPY mailman-web /opt/mailman-web
 # Add startup script to container
 COPY docker-entrypoint.sh /usr/local/bin/
-
-RUN chown -R mailman /opt/mailman-web/ \
+# Add wait-for-it script (MIT license)
+RUN wget -O /usr/local/bin/wait-for-it https://raw.githubusercontent.com/vishnubob/wait-for-it/81b1373f17855a4dc21156cfe1694c31d7d1792e/wait-for-it.sh \
+	&& chmod +x /usr/local/bin/wait-for-it \
+	&& chown -R mailman /opt/mailman-web/ \
 	&& chmod u+x /opt/mailman-web/manage.py
 
 WORKDIR /opt/mailman-web

postorius/Dockerfile.dev

@@ -13,7 +13,7 @@ RUN --mount=type=cache,target=/root/.cache \
 	&& apk add --no-cache --virtual .build-deps gcc libc-dev linux-headers \
 		postgresql-dev mariadb-dev mariadb-connector-c python3-dev libffi-dev git cargo rust \
 	&& apk add --no-cache --virtual .mailman-rundeps bash sassc tzdata \
-		postgresql-client mysql-client py3-mysqlclient curl mailcap \
+		libpq py3-mysqlclient curl mailcap \
 		python3 py3-pip libffi gettext py-cryptography \
     && python3 -m pip install -U pip setuptools wheel \
     && python3 -m pip install -U \
@@ -36,8 +36,10 @@ RUN --mount=type=cache,target=/root/.cache \
 COPY mailman-web /opt/mailman-web
 # Add startup script to container
 COPY docker-entrypoint.sh /usr/local/bin/
-
-RUN chown -R mailman /opt/mailman-web/ \
+# Add wait-for-it script (MIT license)
+RUN wget -O /usr/local/bin/wait-for-it https://raw.githubusercontent.com/vishnubob/wait-for-it/81b1373f17855a4dc21156cfe1694c31d7d1792e/wait-for-it.sh \
+	&& chmod +x /usr/local/bin/wait-for-it \
+	&& chown -R mailman /opt/mailman-web/ \
 	&& chmod u+x /opt/mailman-web/manage.py
 
 WORKDIR /opt/mailman-web

postorius/docker-entrypoint.sh

@@ -2,26 +2,15 @@
 set -e
 
 
-function wait_for_postgres () {
-	# Check if the postgres database is up and accepting connections before
-	# moving forward.
-	# TODO: Use python's psycopg2 module to do this in python instead of
-	# installing postgres-client in the image.
-	until psql -P pager=off $DATABASE_URL -c '\l'; do
-		>&2 echo "Postgres is unavailable - sleeping"
-		sleep 1
-	done
-	>&2 echo "Postgres is up - continuing"
-}
-
-function wait_for_mysql () {
-	# Check if MySQL is up and accepting connections.
-	readarray -d' ' -t ENDPOINT <<< $(python3 -c "from urllib.parse import urlparse; o = urlparse('$DATABASE_URL'); print('%s %s' % (o.hostname, o.port if o.port else '3306'));")
-	until mysqladmin ping --host ${ENDPOINT[0]} --port ${ENDPOINT[1]} --silent; do
-		>&2 echo "MySQL is unavailable - sleeping"
-		sleep 1
-	done
-	>&2 echo "MySQL is up - continuing"
+function wait_for_db () {
+	# Check if the database is up and accepting connections before moving forward.
+	echo "Waiting for $DATABASE_TYPE"
+	declare -A DEFAULT_PORT=( ["postgres"]="5432" ["mysql"]="3306")
+	python3 -c "from urllib.parse import urlparse; o = urlparse('$DATABASE_URL'); print('%s %s' % (o.hostname, o.port if o.port else '${DEFAULT_PORT[$DATABASE_TYPE]}'));" | {
+		read HOST PORT
+		wait-for-it --timeout=60 "$HOST:$PORT" || exit 1
+	}
+	echo "$DATABASE_TYPE is up - continuing"
 }
 
 function check_or_create () {
@@ -57,27 +46,14 @@ fi
 
 # Check if $DATABASE_URL is defined, if not, use a standard sqlite database.
 #
-# If the $DATABASE_URL is defined and is postgres, check if it is available
-# yet. Do not start the container before the postgresql boots up.
-#
-# If the $DATABASE_URL is defined and is mysql, check if the database is
-# available before the container boots up.
-#
-# TODO: Check the database type and detect if it is up based on that. For now,
-# assume that postgres is being used if DATABASE_URL is defined.
-
+# If the $DATABASE_URL is defined, check if the database is available before the
+# container boots up.
 if [[ ! -v DATABASE_URL ]]; then
 	echo "DATABASE_URL is not defined. Using sqlite database..."
 	export DATABASE_URL=sqlite://mailmanweb.db
 	export DATABASE_TYPE='sqlite'
-fi
-
-if [[ "$DATABASE_TYPE" = 'postgres' ]]
-then
-	wait_for_postgres
-elif [[ "$DATABASE_TYPE" = 'mysql' ]]
-then
-	wait_for_mysql
+else
+	wait_for_db
 fi
 
 # Check if we are in the correct directory before running commands.

web/Dockerfile

@@ -12,7 +12,7 @@ RUN --mount=type=cache,target=/root/.cache \
 	&& apk add --no-cache --virtual .build-deps gcc libc-dev linux-headers \
            postgresql-dev mariadb-dev mariadb-connector-c python3-dev libffi-dev openldap-dev cargo rust \
 	&& apk add --no-cache --virtual .mailman-rundeps bash sassc tzdata \
-	   postgresql-client mysql-client py3-mysqlclient curl mailcap gettext \
+	   libpq py3-mysqlclient curl mailcap gettext \
 	   python3 py3-pip xapian-core xapian-bindings-python3 libffi pcre-dev py-cryptography \
 	&& python3 -m pip install -U 'Django<4.2' pip setuptools wheel \
 	&& pip install -r /tmp/requirements.txt \
@@ -36,8 +36,10 @@ RUN --mount=type=cache,target=/root/.cache \
 COPY mailman-web /opt/mailman-web
 # Add startup script to container
 COPY docker-entrypoint.sh /usr/local/bin/
-
-RUN chown -R mailman /opt/mailman-web/ \
+# Add wait-for-it script (MIT license)
+RUN wget -O /usr/local/bin/wait-for-it https://raw.githubusercontent.com/vishnubob/wait-for-it/81b1373f17855a4dc21156cfe1694c31d7d1792e/wait-for-it.sh \
+	&& chmod +x /usr/local/bin/wait-for-it \
+	&& chown -R mailman /opt/mailman-web/ \
 	&& chmod u+x /opt/mailman-web/manage.py
 
 WORKDIR /opt/mailman-web

web/Dockerfile.dev

@@ -14,7 +14,7 @@ RUN --mount=type=cache,target=/root/.cache \
     && apk add --no-cache --virtual .build-deps gcc libc-dev linux-headers git \
         postgresql-dev mariadb-dev mariadb-connector-c python3-dev libffi-dev openldap-dev cargo rust \
     && apk add --no-cache --virtual .mailman-rundeps bash sassc pcre-dev tzdata \
-        python3 py3-pip postgresql-client mysql-client py3-mysqlclient \
+        python3 py3-pip libpq py3-mysqlclient \
         curl mailcap xapian-core xapian-bindings-python3 libffi gettext py-cryptography \
     && python3 -m pip install -U pip setuptools wheel \
     && python3 -m pip install -U \
@@ -43,8 +43,10 @@ RUN --mount=type=cache,target=/root/.cache \
 COPY mailman-web /opt/mailman-web
 # Add startup script to container
 COPY docker-entrypoint.sh /usr/local/bin/
-
-RUN chown -R mailman /opt/mailman-web/ \
+# Add wait-for-it script (MIT license)
+RUN wget -O /usr/local/bin/wait-for-it https://raw.githubusercontent.com/vishnubob/wait-for-it/81b1373f17855a4dc21156cfe1694c31d7d1792e/wait-for-it.sh \
+	&& chmod +x /usr/local/bin/wait-for-it \
+	&& chown -R mailman /opt/mailman-web/ \
 	&& chmod u+x /opt/mailman-web/manage.py
 
 WORKDIR /opt/mailman-web

web/docker-entrypoint.sh

@@ -2,26 +2,15 @@
 set -e
 
 
-function wait_for_postgres () {
-	# Check if the postgres database is up and accepting connections before
-	# moving forward.
-	# TODO: Use python's psycopg2 module to do this in python instead of
-	# installing postgres-client in the image.
-	until psql -P pager=off $DATABASE_URL -c '\l'; do
-		>&2 echo "Postgres is unavailable - sleeping"
-		sleep 1
-	done
-	>&2 echo "Postgres is up - continuing"
-}
-
-function wait_for_mysql () {
-	# Check if MySQL is up and accepting connections.
-	readarray -d' ' -t ENDPOINT <<< $(python3 -c "from urllib.parse import urlparse; o = urlparse('$DATABASE_URL'); print('%s %s' % (o.hostname, o.port if o.port else '3306'));")
-	until mysqladmin ping --host ${ENDPOINT[0]} --port ${ENDPOINT[1]} --silent; do
-		>&2 echo "MySQL is unavailable - sleeping"
-		sleep 1
-	done
-	>&2 echo "MySQL is up - continuing"
+function wait_for_db () {
+	# Check if the database is up and accepting connections before moving forward.
+	echo "Waiting for $DATABASE_TYPE"
+	declare -A DEFAULT_PORT=( ["postgres"]="5432" ["mysql"]="3306")
+	python3 -c "from urllib.parse import urlparse; o = urlparse('$DATABASE_URL'); print('%s %s' % (o.hostname, o.port if o.port else '${DEFAULT_PORT[$DATABASE_TYPE]}'));" | {
+		read HOST PORT
+		wait-for-it --timeout=60 "$HOST:$PORT" || exit 1
+	}
+	echo "$DATABASE_TYPE is up - continuing"
 }
 
 function check_or_create () {
@@ -57,27 +46,14 @@ fi
 
 # Check if $DATABASE_URL is defined, if not, use a standard sqlite database.
 #
-# If the $DATABASE_URL is defined and is postgres, check if it is available
-# yet. Do not start the container before the postgresql boots up.
-#
-# If the $DATABASE_URL is defined and is mysql, check if the database is
-# available before the container boots up.
-#
-# TODO: Check the database type and detect if it is up based on that. For now,
-# assume that postgres is being used if DATABASE_URL is defined.
-
+# If the $DATABASE_URL is defined, check if the database is available before the
+# container boots up.
 if [[ ! -v DATABASE_URL ]]; then
 	echo "DATABASE_URL is not defined. Using sqlite database..."
 	export DATABASE_URL=sqlite://mailmanweb.db
 	export DATABASE_TYPE='sqlite'
-fi
-
-if [[ "$DATABASE_TYPE" = 'postgres' ]]
-then
-	wait_for_postgres
-elif [[ "$DATABASE_TYPE" = 'mysql' ]]
-then
-	wait_for_mysql
+else
+	wait_for_db
 fi
 
 # Check if we are in the correct directory before running commands.