Better freeze ports revision in Gitea Fockerfile.

example/gitea/Fockerfile

@@ -1,10 +1,10 @@
 base: freebsd-11.2
 
 steps:
-  - run:
+  - run: # install dependencies
       - ASSUME_ALWAYS_YES=yes pkg bootstrap
       - ASSUME_ALWAYS_YES=yes IGNORE_OSVERSION=yes pkg install gmake go git git-lfs ca_root_nss
-      # downgrade to Go 1.13
+  - run: # downgrade to Go 1.13
       - ASSUME_ALWAYS_YES=yes pkg remove go
       - ASSUME_ALWAYS_YES=yes IGNORE_OSVERSION=yes pkg install subversion
       - svn checkout --depth immediates https://svn.FreeBSD.org/ports/tags/RELEASE_12_1_0 ports-12.1.0
@@ -20,26 +20,27 @@ steps:
       - ALLOW_UNSUPPORTED_SYSTEM=yes BATCH=yes make install clean
       - cd /
       - rm -rvf /ports-12.1.0
-      # install Gitea
+  - run: # install Gitea
       - ASSUME_ALWAYS_YES=yes pkg remove go14
-      - svn checkout --depth immediates https://svn.FreeBSD.org/ports/head ports-head
-      - cd ports-head
-      - svn update --set-depth immediates www
-      - svn update --set-depth infinity www/gitea
-      - svn update --set-depth infinity Mk
-      - svn update --set-depth infinity Templates
-      - svn update --set-depth infinity Tools
-      - svn update --set-depth infinity Keywords
+      - export REVISION=534103
+      - svn checkout -r $REVISION --depth immediates https://svn.FreeBSD.org/ports/head ports-r${REVISION}
+      - cd ports-r${REVISION}
+      - svn update -r ${REVISION} --set-depth immediates www
+      - svn update -r ${REVISION} --set-depth infinity www/gitea
+      - svn update -r ${REVISION} --set-depth infinity Mk
+      - svn update -r ${REVISION} --set-depth infinity Templates
+      - svn update -r ${REVISION} --set-depth infinity Tools
+      - svn update -r ${REVISION} --set-depth infinity Keywords
       - cd www/gitea
       - ALLOW_UNSUPPORTED_SYSTEM=yes BATCH=yes make install clean
       - cd /
-      - rm -rvf /ports-head
-      # remove unnecessary packages
+      - rm -rvf /ports-r${REVISION}
+  - run: # remove unnecessary packages
       - ASSUME_ALWAYS_YES=yes pkg remove gmake go
       - ASSUME_ALWAYS_YES=yes pkg autoremove
-      # install crudini
+  - run: # install crudini
       - ASSUME_ALWAYS_YES=yes pkg install py27-crudini
-      # final touches
+  - run: # final touches
       - export GITEA_CONF=/usr/local/etc/gitea/conf/app.ini
       - crudini --set --inplace $GITEA_CONF oauth2 JWT_SECRET `gitea generate secret JWT_SECRET`
       - crudini --set --inplace $GITEA_CONF security INTERNAL_TOKEN `gitea generate secret INTERNAL_TOKEN`