Split up some responsabilities from the entrypoint to a service conta…

…iner.

Closes pulp#544

images/assets/pulp-api

@@ -1,18 +1,4 @@
 #!/bin/bash -x
-
-mkdir -p /var/lib/pulp/media \
-         /var/lib/pulp/assets \
-         /var/lib/pulp/tmp
-
-/usr/bin/wait_on_postgres.py
-
-# Get list of installed plugins via pip
-# Assumes they are all named like "pulp-file" -> "file", with no 2nd dash.
-# (Was previously needed when we ran `pulpcore-manager makemigrations`)
-# PLUGINS=$(pip list | awk -F '[[:space:]]+|[-]' '/pulp-/{printf $2 " " }')
-
-/usr/local/bin/pulpcore-manager migrate --noinput
-
 set +x
 
 if [ -n "${PULP_SIGNING_KEY_FINGERPRINT}" ]; then

images/assets/pulp-content

@@ -1,8 +1,5 @@
 #!/bin/bash -x
 
-/usr/bin/wait_on_postgres.py
-/usr/bin/wait_on_database_migrations.sh
-
 if which pulpcore-content
 then
   PULP_CONTENT_ENTRYPOINT=("pulpcore-content")

images/assets/pulp-worker

@@ -1,7 +1,4 @@
 #!/bin/bash -x
 
-/usr/bin/wait_on_postgres.py
-/usr/bin/wait_on_database_migrations.sh
-
 export PATH=/usr/local/bin:/usr/bin/
 exec pulpcore-worker

images/compose/compose.yml

@@ -20,6 +20,18 @@ services:
       timeout: 5s
       retries: 5
 
+  migration_service:
+    image: "pulp/pulp-minimal:latest"
+    depends_on:
+      postgres:
+        condition: service_healthy
+    restart: never
+    command: ['pulpcore-manager', 'migrate', '--noinput'] 
+    volumes:
+      - "./assets/settings.py:/etc/pulp/settings.py:z"
+      - "./assets/certs:/etc/pulp/certs:z"
+      - "pulp:/var/lib/pulp"
+
   redis:
     image: "docker.io/library/redis:latest"
     volumes:
@@ -56,6 +68,8 @@ services:
         condition: service_healthy
       postgres:
         condition: service_healthy
+      migration_service:
+        condition: service_completed_successfully
     hostname: pulp-api
     user: pulp
     volumes:
@@ -81,6 +95,8 @@ services:
         condition: service_healthy
       postgres:
         condition: service_healthy
+      migration_service:
+        condition: service_completed_successfully
     hostname: pulp-content
     user: pulp
     volumes:
@@ -104,6 +120,8 @@ services:
         condition: service_healthy
       postgres:
         condition: service_healthy
+      migration_service:
+        condition: service_completed_successfully
     user: pulp
     volumes:
       - "./assets/settings.py:/etc/pulp/settings.py:z"