Add Docker as deploy platform

Add presence of Docker-related commands in a "Deployment" (or similar) section of README as likely deploy target / platform

Author: grega

hdi

@@ -1437,6 +1437,7 @@ detect_platforms_from_commands() {
       cdk)                   _platform_add "awscdk"      "AWS CDK"     "high" ;;
       dokku)                 _platform_add "dokku"       "Dokku"       "high" ;;
       surge)                 _platform_add "surge"       "Surge"       "high" ;;
+      docker|docker-compose|podman) _platform_add "docker" "Docker" "high" ;;
     esac
   done
 }
@@ -1464,6 +1465,7 @@ detect_platforms_from_prose() {
     if [[ "$body" =~ DigitalOcean ]]; then                 _platform_add "digitalocean" "DigitalOcean"       "low"; fi
     if [[ "$body" =~ Kamal ]]; then                        _platform_add "kamal"        "Kamal"              "low"; fi
     if [[ "$body" =~ Surge ]]; then                        _platform_add "surge"        "Surge"              "low"; fi
+    if [[ "$body" =~ Docker ]]; then                       _platform_add "docker"       "Docker"             "low"; fi
     shopt -u nocasematch
   done
 }

src/platform.sh

@@ -89,6 +89,7 @@ detect_platforms_from_commands() {
       cdk)                   _platform_add "awscdk"      "AWS CDK"     "high" ;;
       dokku)                 _platform_add "dokku"       "Dokku"       "high" ;;
       surge)                 _platform_add "surge"       "Surge"       "high" ;;
+      docker|docker-compose|podman) _platform_add "docker" "Docker" "high" ;;
     esac
   done
 }
@@ -116,6 +117,7 @@ detect_platforms_from_prose() {
     if [[ "$body" =~ DigitalOcean ]]; then                 _platform_add "digitalocean" "DigitalOcean"       "low"; fi
     if [[ "$body" =~ Kamal ]]; then                        _platform_add "kamal"        "Kamal"              "low"; fi
     if [[ "$body" =~ Surge ]]; then                        _platform_add "surge"        "Surge"              "low"; fi
+    if [[ "$body" =~ Docker ]]; then                       _platform_add "docker"       "Docker"             "low"; fi
     shopt -u nocasematch
   done
 }

test/fixtures/platform-docker/README.md

@@ -0,0 +1,18 @@
+# express-api
+
+A containerized Express API.
+
+## Install
+
+```bash
+npm install
+```
+
+## Deployment
+
+Build the Docker image and push to the container registry:
+
+```bash
+docker build -t express-api .
+docker push ghcr.io/acme/express-api:latest
+```

test/hdi.bats

@@ -1613,3 +1613,32 @@ assert all(p['confidence'] == 'high' for p in platforms), 'expected all high con
   [ "$status" -eq 0 ]
   [[ "$output" != *"Vercel"* ]]
 }
+
+@test "platform: Docker detected from deploy section commands" {
+  run "$HDI" deploy --ni "$FIXTURES/platform-docker"
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"deploy → Docker"* ]]
+  [[ "$output" != *"Docker?"* ]]
+}
+
+@test "platform: Docker CLI tool detection" {
+  run "$HDI" deploy --ni "$FIXTURES/platform-docker"
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"docker build"* ]]
+  [[ "$output" == *"docker push"* ]]
+}
+
+@test "platform: Docker json output" {
+  run "$HDI" --json "$FIXTURES/platform-docker"
+  [ "$status" -eq 0 ]
+  echo "$output" | python3 -c "
+import json,sys
+d=json.load(sys.stdin)
+platforms = d['platforms']
+names = [p['name'] for p in platforms]
+assert 'Docker' in names, f'expected Docker in {names}'
+dk = [p for p in platforms if p['name'] == 'Docker'][0]
+assert dk['confidence'] == 'high', f'expected high confidence, got {dk[\"confidence\"]}'
+assert dk['group'] == 'docker'
+"
+}