Add support for php 8.1

This commit adds optional support for basing images on php 8.1 as
opposed to php 8.0.

internal/dis/component/instances/create.go

@@ -14,11 +14,34 @@ var (
 	errRestrictedSlug = errors.New("restricted slug")
 )
 
+const (
+	PHP8         = "8.0"
+	PHP8_IMAGE   = "docker.io/library/php:8.0-apache-bullseye"
+	PHP8_1       = "8.1"
+	PHP8_1_IMAGE = "docker.io/library/php:8.1-apache-bullseye"
+)
+
+var errUnknownPHPVersion = errors.New("unknown php version")
+
+// GetBaseImage returns the php base image to use
+func GetBaseImage(php string) (string, error) {
+	switch php {
+	case "":
+		return PHP8_IMAGE, nil
+	case PHP8:
+		return PHP8_IMAGE, nil
+	case PHP8_1:
+		return PHP8_1_IMAGE, nil
+	default:
+		return "", errUnknownPHPVersion
+	}
+}
+
 // Create fills the struct for a new WissKI instance.
 // It validates that slug is a valid name for an instance.
 //
 // It does not perform any checks if the instance already exists, or does the creation in the database.
-func (instances *Instances) Create(slug string) (wissKI *wisski.WissKI, err error) {
+func (instances *Instances) Create(slug string, phpversion string) (wissKI *wisski.WissKI, err error) {
 
 	// make sure that the slug is valid!
 	slug, err = instances.IsValidSlug(slug)
@@ -64,6 +87,12 @@ func (instances *Instances) Create(slug string) (wissKI *wisski.WissKI, err erro
 		return nil, err
 	}
 
+	// docker image
+	wissKI.Liquid.Instance.DockerBaseImage, err = GetBaseImage(phpversion)
+	if err != nil {
+		return nil, err
+	}
+
 	// store the instance in the object and return it!
 	return wissKI, nil
 }

internal/dis/component/instances/purger/purger.go

@@ -37,7 +37,7 @@ func (purger *Purger) Purge(ctx context.Context, out io.Writer, slug string) err
 	instance, err := purger.Dependencies.Instances.WissKI(ctx, slug)
 	if err == instances.ErrWissKINotFound {
 		fmt.Fprintln(out, "Not found in bookkeeping table, assuming defaults")
-		instance, err = purger.Dependencies.Instances.Create(slug)
+		instance, err = purger.Dependencies.Instances.Create(slug, "")
 	}
 	if err != nil {
 		return errPurgeNoDetails.WithMessageF(err)

internal/dis/component/provision/provision.go

@@ -22,11 +22,27 @@ type Provision struct {
 
 // ProvisionFlags are flags for a new instance
 type ProvisionFlags struct {
+	// Slug is the slug of the wisski instance
 	Slug string
+
+	// PHP Version to use
+	PHPVersion string
 }
 
 var ErrInstanceAlreadyExists = errors.New("instance with provided slug already exists")
 
+func (pv *Provision) ValidateFlags(flags ProvisionFlags) error {
+	// check the slug
+	if _, err := pv.Dependencies.Instances.IsValidSlug(flags.Slug); err != nil {
+		return err
+	}
+	// check for known php versions
+	if _, err := instances.GetBaseImage(flags.PHPVersion); err != nil {
+		return err
+	}
+	return nil
+}
+
 // Provision provisions a new docker compose instance.
 func (pv *Provision) Provision(progress io.Writer, ctx context.Context, flags ProvisionFlags) (*wisski.WissKI, error) {
 	// check that it doesn't already exist
@@ -36,7 +52,7 @@ func (pv *Provision) Provision(progress io.Writer, ctx context.Context, flags Pr
 	}
 
 	// make it in-memory
-	instance, err := pv.Dependencies.Instances.Create(flags.Slug)
+	instance, err := pv.Dependencies.Instances.Create(flags.Slug, flags.PHPVersion)
 	if err != nil {
 		return nil, err
 	}

internal/dis/component/server/admin/html/instance.html

@@ -29,6 +29,18 @@
                             <a href="{{ .Info.URL }}" target="_blank" rel="noopener noreferrer">{{ .Info.URL }}</a>
                         </td>
                     </tr>
+                    <tr>
+                        <td>
+                            Docker Base Image
+                        </td>
+                        <td>
+                            {{ if  .Instance.DockerBaseImage }}
+                            <code>{{ .Instance.DockerBaseImage }}</code>
+                            {{ else }}
+                            (none)
+                            {{ end }}
+                        </td>
+                    </tr>
                     <tr>
                         <td>
                             Running

internal/models/instances.go

@@ -34,6 +34,9 @@ type Instance struct {
 	// The filesystem path the system can be found under
 	FilesystemBase string `gorm:"column:filesystem_base;not null"`
 
+	// DockerBaseImage is the php base image to use
+	DockerBaseImage string `gorm:"column:docker_base;not_null`
+
 	// SQL Database credentials for the system
 	SqlDatabase string `gorm:"column:sql_database;not null"`
 	SqlUsername string `gorm:"column:sql_user;not null"`

internal/wisski/ingredient/barrel/barrel.env

@@ -6,4 +6,5 @@ WISSKI_HOSTNAME=${HOSTNAME}
 HOST_RULE=${HOST_RULE}
 DOCKER_NETWORK_NAME=${DOCKER_NETWORK_NAME}
 
-HTTPS_ENABLED=${HTTPS_ENABLED}
+HTTPS_ENABLED=${HTTPS_ENABLED}
+BARREL_BASE_IMAGE=${BARREL_BASE_IMAGE}

internal/wisski/ingredient/barrel/barrel/Dockerfile

@@ -1,4 +1,5 @@
-FROM docker.io/library/php:8.0-apache-bullseye
+ARG BARREL_BASE_IMAGE
+FROM $BARREL_BASE_IMAGE
 ARG COMPOSER_VERSION=2.3.8
 WORKDIR /var/www
 

internal/wisski/ingredient/barrel/barrel/docker-compose.yml

@@ -2,7 +2,11 @@ version: "3.7"
 
 services:
   barrel:
-    build: .
+    build:
+      context: .
+      args:
+        BARREL_BASE_IMAGE: ${BARREL_BASE_IMAGE}
+    
     restart: always
     hostname: ${WISSKI_HOSTNAME}
 

internal/wisski/ingredient/barrel/barrel/scripts/provision_container.sh

@@ -85,6 +85,18 @@ function composer_install_and_enable() {
     done
 }
 
+function try_variants() {
+    for var in "$@"
+    do
+        if composer require --dry-run "$var" > /dev/null 2>&1; then
+            composer require "$var"
+            return 0;
+        fi
+    done
+
+    return 1;
+}
+
 
 # Create a new composer project. 
 log_info " => Creating composer project"
@@ -99,7 +111,7 @@ composer --no-interaction config allow-plugins true
 
 # Install drush so that we can automate a lot of things
 log_info " => Installing 'drush'"
-composer require drush/drush
+try_variants 'drush/drush' 'drush/drush:^12' 'drush/drush:^11' || (echo "No version of Drush is installable" && false)
 
 # Use 'drush' to run the site-installation. 
 # Here we need to use the username, password and database creds we made above. 

internal/wisski/ingredient/barrel/stack.go

@@ -31,6 +31,8 @@ func (barrel *Barrel) Stack() component.StackWithResources {
 
 			"DATA_PATH":   filepath.Join(barrel.FilesystemBase, "data"),
 			"RUNTIME_DIR": barrel.Malt.Config.Paths.RuntimeDir(),
+
+			"BARREL_BASE_IMAGE": barrel.DockerBaseImage,
 		},
 
 		MakeDirs: []string{"data", ".composer"},