Refactor Package structure

This commit cleans up the package structure, to make two new top-level
packages `internal` (for internal-use packages) and `pkg` (for general
shared utility code).

internal/component/dis/dis.env

@@ -0,0 +1,9 @@
+VIRTUAL_HOST=${VIRTUAL_HOST}
+
+LETSENCRYPT_HOST=${LETSENCRYPT_HOST}
+LETSENCRYPT_EMAIL=${LETSENCRYPT_EMAIL}
+
+CONFIG_PATH=${CONFIG_PATH}
+DEPLOY_ROOT=${DEPLOY_ROOT}
+GLOBAL_AUTHORIZED_KEYS_FILE=${GLOBAL_AUTHORIZED_KEYS_FILE}
+SELF_OVERRIDES_FILE=${SELF_OVERRIDES_FILE}

internal/component/dis/dis.go

@@ -0,0 +1,48 @@
+package dis
+
+import (
+	"embed"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/component"
+	"github.com/FAU-CDI/wisski-distillery/internal/core"
+)
+
+type Dis struct {
+	component.ComponentBase
+
+	Executable string // path to the current executable
+}
+
+func (dis Dis) Name() string {
+	return "dis"
+}
+
+//go:embed all:stack dis.env
+var resources embed.FS
+
+func (dis Dis) Stack() component.Installable {
+	return dis.ComponentBase.MakeStack(component.Installable{
+		Resources:   resources,
+		ContextPath: "stack",
+		EnvPath:     "dis.env",
+
+		EnvContext: map[string]string{
+			"VIRTUAL_HOST":      dis.Config.DefaultHost(),
+			"LETSENCRYPT_HOST":  dis.Config.DefaultSSLHost(),
+			"LETSENCRYPT_EMAIL": dis.Config.CertbotEmail,
+
+			"CONFIG_PATH": dis.Config.ConfigPath,
+			"DEPLOY_ROOT": dis.Config.DeployRoot,
+
+			"GLOBAL_AUTHORIZED_KEYS_FILE": dis.Config.GlobalAuthorizedKeysFile,
+			"SELF_OVERRIDES_FILE":         dis.Config.SelfOverridesFile,
+		},
+		CopyContextFiles: []string{core.Executable},
+	})
+}
+
+func (dis Dis) Context(parent component.InstallationContext) component.InstallationContext {
+	return component.InstallationContext{
+		core.Executable: dis.Executable,
+	}
+}

internal/component/dis/stack/Dockerfile

@@ -0,0 +1,5 @@
+FROM docker.io/library/alpine
+
+COPY wdcli /wdcli
+EXPOSE 8888
+CMD ["/wdcli","--internal-in-docker","--config","${CONFIG_PATH}","dis_server","--bind","0.0.0.0:8888"]

internal/component/dis/stack/docker-compose.yml

@@ -0,0 +1,28 @@
+version: "3.7"
+
+services:
+  wdresolve:
+    build: .
+    restart: always
+    environment:
+      # port and hostname for this image to use
+      VIRTUAL_HOST: ${VIRTUAL_HOST}
+      VIRTUAL_PORT: 8888
+      VIRTUAL_PATH: /dis/
+
+      CONFIG_PATH: ${CONFIG_PATH}
+      
+      # optional letsencrypt email
+      LETSENCRYPT_HOST: ${LETSENCRYPT_HOST}
+      LETSENCRYPT_EMAIL: ${LETSENCRYPT_EMAIL}
+
+    volumes:
+      - "${CONFIG_PATH}:${CONFIG_PATH}:ro"
+      - "${DEPLOY_ROOT}:${DEPLOY_ROOT}:ro"
+      - "${GLOBAL_AUTHORIZED_KEYS_FILE}:${GLOBAL_AUTHORIZED_KEYS_FILE}:ro"
+      - "${SELF_OVERRIDES_FILE}:${SELF_OVERRIDES_FILE}:ro"
+
+networks:
+  default:
+    name: distillery
+    external: true