FIX: Add VERAPDF_INSTALLER_FOLDER argument and fix typos

Author: MaximPlusov

Dockerfile

@@ -2,15 +2,15 @@
 # First build the app on a maven open jdk 11 container
 ARG VERAPDF_VERSION=1.26
 ARG VERAPDF_MINOR_VERSION=2
+ARG VERAPDF_INSTALLER_FOLDER=releases
 FROM eclipse-temurin:11-jdk-alpine AS app-installer
-ARG VERAPDF_VERSION
-ARG VERAPDF_MINOR_VERSION
 ENV VERAPDF_VERSION=${VERAPDF_VERSION}
 ENV VERAPDF_MINOR_VERSION=${VERAPDF_MINOR_VERSION}
+ENV VERAPDF_INSTALLER_FOLDER=${VERAPDF_INSTALLER_FOLDER}
 
 WORKDIR /tmp
 COPY docker-install.xml .
-RUN wget -O /tmp/verapdf-installer.zip https://software.verapdf.org/releases/${VERAPDF_VERSION}/verapdf-greenfield-${VERAPDF_VERSION}.${VERAPDF_MINOR_VERSION}-installer.zip
+RUN wget -O /tmp/verapdf-installer.zip https://software.verapdf.org/${VERAPDF_INSTALLER_FOLDER}/${VERAPDF_VERSION}/verapdf-greenfield-${VERAPDF_VERSION}.${VERAPDF_MINOR_VERSION}-installer.zip
 RUN unzip verapdf-installer.zip && java -jar ./verapdf-greenfield-${VERAPDF_VERSION}.${VERAPDF_MINOR_VERSION}/verapdf-izpack-installer-${VERAPDF_VERSION}.${VERAPDF_MINOR_VERSION}.jar docker-install.xml
 
 # Now build a Java JRE for the Alpine application image

README.md

@@ -119,15 +119,17 @@ Where `${project.version}` is the current Maven project version. This should bri
 
 ## Building the Docker image
 
-The accompanying [`Dockerfile`](Dockerfile) can be used to build a Docker image containing the veraPDF CLI and GUI applications. The image is based on the official Alpine image. It effedoesn't build the project, instead it downloads a version of the installer. It also builds a slimline JRE which is used to trim the final image size.
+The accompanying [`Dockerfile`](Dockerfile) can be used to build a Docker image containing the veraPDF CLI and GUI applications. The image is based on the official Alpine image. It doesn't build the project, instead it downloads a version of the installer. It also builds a slimline JRE which is used to trim the final image size.
 
-The version built is controlled by two arguments in the Dockerfile, `VERAPDF_VERSION` and `VERAPDF_MINOR_VERSION`. These can be used to select a specific installer at invocation time. The default values are `VERAPDF_VERSION=1.27` and `VERAPDF_MINOR_VERSION=2`, which builds the latest production version, e.g. `1.26.2`.
+The version built is controlled by three arguments in the Dockerfile, `VERAPDF_VERSION`, `VERAPDF_MINOR_VERSION` and `VERAPDF_INSTALLER_FOLDER`. These can be used to select a specific installer at invocation time. The default values are `VERAPDF_VERSION=1.26`, `VERAPDF_MINOR_VERSION=2` and `VERAPDF_INSTALLER_FOLDER=releases`, which builds the latest production version, e.g. `1.26.2`.
 
 To build and run the very latest version:
 
     docker build -t verapdf .
     docker run -it -v "$(pwd)":/data --name verapdf verapdf a.pdf 
 
-To build a specific version, e.g. `1.26.3`:
+To build a specific version, e.g. `1.22.3`:
 
     docker build --build-arg VERAPDF_VERSION=1.22 --build-arg VERAPDF_MINOR_VERSION=3 -t verapdf .
+
+To build a specific development version argument `VERAPDF_INSTALLER_FOLDER` should be set to `develop`.