switches to sh instead of bash

create.sh

@@ -1,73 +1,92 @@
-#! /bin/bash
+#! /bin/sh
 #
 
-set -o allexport;
-source .env;
-set +o allexport
+if [ -f .env ]
+then
+  set -o allexport;
+  . ./.env;
+  set +o allexport
+else
+  echo Missing .env file
+  exit 1  
+fi
 
-echo "Setting up docker volumes";
-docker volume create $DOCKER_PREFIX-web;
-docker volume create $DOCKER_PREFIX-db;
-docker volume create wp-cli-cache;
-echo "Setting up docker network";
-docker network create $DOCKER_PREFIX;
+echo Setting up ${DOCKER_PREFIX} volumes
+docker volume create ${DOCKER_PREFIX}-web
+docker volume create ${DOCKER_PREFIX}-db
+docker volume create wp-cli-cache
+echo Setting up ${DOCKER_PREFIX} network
+docker network create ${DOCKER_PREFIX}
 
-docker-compose up -d web;
-while ! docker ps -q -f name=$DOCKER_PREFIX-web; do
-    echo "Waiting for the web container to be up and running...";
-    sleep 1;
+docker-compose up -d web
+while [ ! $(docker ps --quiet --filter name=${DOCKER_PREFIX}-web) ]
+do
+    echo Waiting for the ${DOCKER_PREFIX}-web container to be up and running…
+    sleep 1
 done
 
-docker-compose up -d db;
-while ! docker ps -q -f name=$DOCKER_PREFIX-db; do
-    echo "Waiting for the db container to be up and running...";
-    sleep 1;
+docker-compose up -d db
+while [ ! $(docker ps -q -f name=${DOCKER_PREFIX}-db) ]
+do
+    echo Waiting for the ${DOCKER_PREFIX}-db container to be up and running…
+    sleep 1
 done
 
-while ! docker exec $DOCKER_PREFIX-web /bin/sh -c "mysqladmin ping -h $DOCKER_PREFIX-db -P 3306 --protocol=tcp -u user -puser --silent" ; do
-    echo "Waiting for the mysql server in the db container to be up and running...";
-    sleep 1;
+COMMAND="mysqladmin \
+  ping \
+  --host ${DOCKER_PREFIX}-db \
+  --port 3306 \
+  --protocol=tcp \
+  --user=${DB_USER} \
+  --password=${DB_USER_PASSWORD} \
+  --silent"
+# weird [: mysqld: unexpected operator when using COMMAND
+#while ! docker exec ${DOCKER_PREFIX}-web /bin/sh -c "mysqladmin ping -h ${DOCKER_PREFIX}-db -P 3306 --protocol=tcp -u user -puser --silent"
+while [ ! $(docker exec ${DOCKER_PREFIX}-web /bin/sh -c "${COMMAND}") ]
+do
+    echo Waiting for ${DOCKER_PREFIX}-db to accept connections…
+    sleep 1
 done
 
-echo "Downloading WordPress core";
-docker exec --user www-data $DOCKER_PREFIX-web /bin/sh -c "
+echo Downloading WordPress core
+docker exec --user www-data ${DOCKER_PREFIX}-web /bin/sh -c "
     wp core download \
-        --locale=$WP_LOCALE \
+        --locale=${WP_LOCALE} \
         --path=/var/www/html \
-        --version=$WP_VERSION";
+        --version=${WP_VERSION}"
 
-echo "Creating WordPress config";
-docker exec --user www-data $DOCKER_PREFIX-web /bin/sh -c '
+echo Creating ${DOCKER_PREFIX} WordPress config
+docker exec --user www-data ${DOCKER_PREFIX}-web /bin/sh -c '
     wp config create \
-        --dbhost='"$DOCKER_PREFIX-db"' \
-        --dbname='"$DOCKER_PREFIX"' \
-        --dbpass='"$DB_USER_PASSWORD"' \
-        --dbuser='"$DB_USER"' \
+        --dbhost='"${DOCKER_PREFIX}-db"' \
+        --dbname='"${DOCKER_PREFIX}"' \
+        --dbpass='"${DB_USER_PASSWORD}"' \
+        --dbuser='"${DB_USER}"' \
         --force \
         --path=/var/www/html \
         --skip-check \
         --extra-php <<EXTRA-PHP
 if (isset(\$_SERVER["HTTP_X_FORWARDED_PROTO"]) && \$_SERVER["HTTP_X_FORWARDED_PROTO"] == "https") \$_SERVER["HTTPS"]="on";
 EXTRA-PHP
-';
+'
 
-echo "Installing WordPress core";
-docker exec --user www-data $DOCKER_PREFIX-web /bin/sh -c "
+echo Installing WordPress core
+docker exec --user www-data ${DOCKER_PREFIX}-web /bin/sh -c "
     wp core install \
         --admin_email=no@mail.com \
-        --admin_password=$WP_ADMIN_PASSWORD \
-        --admin_user=$WP_ADMIN_USERNAME \
+        --admin_password=${WP_ADMIN_PASSWORD} \
+        --admin_user=${WP_ADMIN_USERNAME} \
         --path=/var/www/html \
         --skip-email \
-        --title=$DOCKER_PREFIX \
-        --url=$WP_DEFAULT_PROTOCOL://$WP_URL";
+        --title=${DOCKER_PREFIX} \
+        --url=${WP_DEFAULT_PROTOCOL}://${WP_URL}"
 
-echo "Installing WordPress $WP_THEME theme";
-docker exec --user www-data $DOCKER_PREFIX-web /bin/sh -c "
-    wp theme install $WP_THEME \
+echo Installing WordPress ${WP_THEME} theme
+docker exec --user www-data ${DOCKER_PREFIX}-web /bin/sh -c "
+    wp theme install ${WP_THEME} \
         --activate \
-        --path=/var/www/html";
+        --path=/var/www/html"
 
-echo "Connect network to traefik";
-docker network connect $DOCKER_PREFIX $TRAEFIK_NETWORK_NAME;
+echo Connect ${DOCKER_PREFIX} network to ${TRAEFIK_NETWORK_NAME}
+docker network connect ${DOCKER_PREFIX} ${TRAEFIK_NETWORK_NAME}
 docker-compose up -d adminer