diff --git a/.forgejo/workflows/before_almalinux_8.yaml b/.forgejo/workflows/before_almalinux_8.yaml
deleted file mode 100644
index 945c231..0000000
--- a/.forgejo/workflows/before_almalinux_8.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}almalinux:8
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/before_alpine_3.19.yaml b/.forgejo/workflows/before_alpine_3.19.yaml
deleted file mode 100644
index 10cdc29..0000000
--- a/.forgejo/workflows/before_alpine_3.19.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}alpine:3.19
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/before_archlinux_base-20240101.0.204074.yaml b/.forgejo/workflows/before_archlinux_base-20240101.0.204074.yaml
deleted file mode 100644
index 11f94ef..0000000
--- a/.forgejo/workflows/before_archlinux_base-20240101.0.204074.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}archlinux:base-20240101.0.204074
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/before_debian_bullseye.yaml b/.forgejo/workflows/before_debian_bullseye.yaml
deleted file mode 100644
index 4146863..0000000
--- a/.forgejo/workflows/before_debian_bullseye.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}debian:bullseye
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/before_fedora_39.yaml b/.forgejo/workflows/before_fedora_39.yaml
deleted file mode 100644
index cf5e65f..0000000
--- a/.forgejo/workflows/before_fedora_39.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}fedora:39
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/before_opensuse_15.5.yaml b/.forgejo/workflows/before_opensuse_15.5.yaml
deleted file mode 100644
index bcf1b30..0000000
--- a/.forgejo/workflows/before_opensuse_15.5.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}opensuse/leap:15.5
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/before_rockylinux_8.yaml b/.forgejo/workflows/before_rockylinux_8.yaml
deleted file mode 100644
index 10a78f5..0000000
--- a/.forgejo/workflows/before_rockylinux_8.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}rockylinux:8
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/before_ubuntu_jammy.yaml b/.forgejo/workflows/before_ubuntu_jammy.yaml
deleted file mode 100644
index 45245ef..0000000
--- a/.forgejo/workflows/before_ubuntu_jammy.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}ubuntu:jammy
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/latest_almalinux_9.yaml b/.forgejo/workflows/latest_almalinux_9.yaml
deleted file mode 100644
index f2c48e3..0000000
--- a/.forgejo/workflows/latest_almalinux_9.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}almalinux:9
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/latest_alpine_3.20.yaml b/.forgejo/workflows/latest_alpine_3.20.yaml
deleted file mode 100644
index 3f1ff3b..0000000
--- a/.forgejo/workflows/latest_alpine_3.20.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}alpine:3.20
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/latest_archlinux_base-20240818.0.255804.yaml b/.forgejo/workflows/latest_archlinux_base-20240818.0.255804.yaml
deleted file mode 100644
index 6eeacbd..0000000
--- a/.forgejo/workflows/latest_archlinux_base-20240818.0.255804.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}archlinux:base-20240818.0.255804
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/latest_debian_bookworm.yaml b/.forgejo/workflows/latest_debian_bookworm.yaml
deleted file mode 100644
index 47567e8..0000000
--- a/.forgejo/workflows/latest_debian_bookworm.yaml
+++ /dev/null
@@ -1,17 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}debian:bookworm
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-        SPCD_SSH_HOSTS: ${{vars.SPCD_SSH_HOSTS}}
-        SPCD_SSH_KEY: ${{secrets.SPCD_SSH_KEY}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
-    - run: spcd-synchronize
diff --git a/.forgejo/workflows/latest_fedora_40.yaml b/.forgejo/workflows/latest_fedora_40.yaml
deleted file mode 100644
index 04a2beb..0000000
--- a/.forgejo/workflows/latest_fedora_40.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}fedora:40
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/latest_opensuse_15.6.yaml b/.forgejo/workflows/latest_opensuse_15.6.yaml
deleted file mode 100644
index 0b20f95..0000000
--- a/.forgejo/workflows/latest_opensuse_15.6.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}opensuse/leap:15.6
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/latest_rockylinux_9.yaml b/.forgejo/workflows/latest_rockylinux_9.yaml
deleted file mode 100644
index 7a5f07f..0000000
--- a/.forgejo/workflows/latest_rockylinux_9.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}rockylinux:9
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/latest_ubuntu_noble.yaml b/.forgejo/workflows/latest_ubuntu_noble.yaml
deleted file mode 100644
index ae589e8..0000000
--- a/.forgejo/workflows/latest_ubuntu_noble.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-on: [push]
-jobs:
-  job:
-    container:
-      image: ${{vars.DOCKER}}ubuntu:noble
-    steps:
-    - name: spcd
-      env:
-        SPCD: ${{vars.SPCD}}
-      run: ${{vars.SPCD}}
-
-    - run: spcd-check-project
-    - run: spcd-build-project
-    - run: spcd-browse-workspace
diff --git a/.forgejo/workflows/main.yaml b/.forgejo/workflows/main.yaml
new file mode 100644
index 0000000..780827a
--- /dev/null
+++ b/.forgejo/workflows/main.yaml
@@ -0,0 +1,228 @@
+on: [push]
+jobs:
+
+  archlinux_latest:
+    container:
+      image: ${{vars.DOCKER}}archlinux:base-20240818.0.255804
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+
+  archlinux_previous:
+    needs: archlinux_latest
+    container:
+      image: ${{vars.DOCKER}}archlinux:base-20240101.0.204074
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+
+  alpine_latest:
+    needs: archlinux_previous
+    container:
+      image: ${{vars.DOCKER}}alpine:3.20
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+
+  fedora_latest:
+    needs: alpine_latest
+    container:
+      image: ${{vars.DOCKER}}fedora:40
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+
+  debian_latest:
+    needs: fedora_latest
+    container:
+      image: ${{vars.DOCKER}}debian:bookworm
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+        SPCD_SSH_HOSTS: ${{vars.SPCD_SSH_HOSTS}}
+        SPCD_SSH_KEY: ${{secrets.SPCD_SSH_KEY}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+    - run: spcd-synchronize
+
+  opensuse_latest:
+    needs: debian_latest
+    container:
+      image: ${{vars.DOCKER}}opensuse/leap:15.6
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+
+  ubuntu_latest:
+    needs: opensuse_latest
+    container:
+      image: ${{vars.DOCKER}}ubuntu:noble
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+
+  almalinux_latest:
+    needs: ubuntu_latest
+    container:
+      image: ${{vars.DOCKER}}almalinux:9
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+
+  rockylinux_latest:
+    needs: almalinux_latest
+    container:
+      image: ${{vars.DOCKER}}rockylinux:9
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+
+  alpine_previous:
+    needs: rockylinux_latest
+    container:
+      image: ${{vars.DOCKER}}alpine:3.19
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+
+  fedora_previous:
+    needs: alpine_previous
+    container:
+      image: ${{vars.DOCKER}}fedora:39
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+
+  opensuse_previous:
+    needs: fedora_previous
+    container:
+      image: ${{vars.DOCKER}}opensuse/leap:15.5
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+
+  almalinux_previous:
+    needs: opensuse_previous
+    container:
+      image: ${{vars.DOCKER}}almalinux:8
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+
+  rockylinux_previous:
+    needs: almalinux_previous
+    container:
+      image: ${{vars.DOCKER}}rockylinux:8
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+
+  ubuntu_previous:
+    needs: rockylinux_previous
+    container:
+      image: ${{vars.DOCKER}}ubuntu:jammy
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
+
+  debian_previous:
+    needs: ubuntu_previous
+    container:
+      image: ${{vars.DOCKER}}debian:bullseye
+    steps:
+    - name: spcd
+      env:
+        SPCD: ${{vars.SPCD}}
+      run: ${{vars.SPCD}}
+
+    - run: spcd-check-project
+    - run: spcd-build-project
+    - run: spcd-browse-workspace
diff --git a/readme.md b/readme.md
index 559e788..e9702d4 100644
--- a/readme.md
+++ b/readme.md
@@ -211,6 +211,8 @@ Handle project workflows in a unified way:
 
 ## When
 
+* sequential workflows
+
 ### Shell
 
 * comment